995 lines
39 KiB
Plaintext
995 lines
39 KiB
Plaintext
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.\" ========================================================================
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.\"
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.IX Title "OPENSSL-CMS 1ossl"
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.TH OPENSSL-CMS 1ossl "2024-03-21" "3.2.1" "OpenSSL"
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.\" For nroff, turn off justification. Always turn off hyphenation; it makes
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.\" way too many mistakes in technical documents.
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.if n .ad l
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.nh
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.SH "NAME"
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openssl\-cms \- CMS command
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.SH "SYNOPSIS"
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.IX Header "SYNOPSIS"
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\&\fBopenssl\fR \fBcms\fR
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[\fB\-help\fR]
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.PP
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General options:
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.PP
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[\fB\-in\fR \fIfilename\fR]
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[\fB\-out\fR \fIfilename\fR]
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[\fB\-config\fR \fIconfigfile\fR]
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.PP
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Operation options:
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.PP
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[\fB\-encrypt\fR]
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[\fB\-decrypt\fR]
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[\fB\-sign\fR]
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[\fB\-verify\fR]
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[\fB\-resign\fR]
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[\fB\-sign_receipt\fR]
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[\fB\-verify_receipt\fR \fIreceipt\fR]
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[\fB\-digest\fR \fIdigest\fR]
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[\fB\-digest_create\fR]
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[\fB\-digest_verify\fR]
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[\fB\-compress\fR]
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[\fB\-uncompress\fR]
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[\fB\-EncryptedData_encrypt\fR]
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[\fB\-EncryptedData_decrypt\fR]
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[\fB\-data_create\fR]
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[\fB\-data_out\fR]
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[\fB\-cmsout\fR]
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.PP
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File format options:
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.PP
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[\fB\-inform\fR \fB\s-1DER\s0\fR|\fB\s-1PEM\s0\fR|\fB\s-1SMIME\s0\fR]
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[\fB\-outform\fR \fB\s-1DER\s0\fR|\fB\s-1PEM\s0\fR|\fB\s-1SMIME\s0\fR]
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[\fB\-rctform\fR \fB\s-1DER\s0\fR|\fB\s-1PEM\s0\fR|\fB\s-1SMIME\s0\fR]
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[\fB\-stream\fR]
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[\fB\-indef\fR]
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[\fB\-noindef\fR]
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[\fB\-binary\fR]
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[\fB\-crlfeol\fR]
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[\fB\-asciicrlf\fR]
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.PP
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Keys and password options:
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.PP
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[\fB\-pwri_password\fR \fIpassword\fR]
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[\fB\-secretkey\fR \fIkey\fR]
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[\fB\-secretkeyid\fR \fIid\fR]
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[\fB\-inkey\fR \fIfilename\fR|\fIuri\fR]
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[\fB\-passin\fR \fIarg\fR]
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[\fB\-keyopt\fR \fIname\fR:\fIparameter\fR]
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[\fB\-keyform\fR \fB\s-1DER\s0\fR|\fB\s-1PEM\s0\fR|\fBP12\fR|\fB\s-1ENGINE\s0\fR]
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[\fB\-engine\fR \fIid\fR]
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[\fB\-provider\fR \fIname\fR]
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[\fB\-provider\-path\fR \fIpath\fR]
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[\fB\-propquery\fR \fIpropq\fR]
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[\fB\-rand\fR \fIfiles\fR]
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[\fB\-writerand\fR \fIfile\fR]
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.PP
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Encryption options:
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.PP
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[\fB\-originator\fR \fIfile\fR]
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[\fB\-recip\fR \fIfile\fR]
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[\fIrecipient-cert\fR ...]
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[\fB\-\f(BIcipher\fB\fR]
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[\fB\-wrap\fR \fIcipher\fR]
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[\fB\-aes128\-wrap\fR]
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[\fB\-aes192\-wrap\fR]
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[\fB\-aes256\-wrap\fR]
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[\fB\-des3\-wrap\fR]
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[\fB\-debug_decrypt\fR]
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.PP
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Signing options:
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.PP
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[\fB\-md\fR \fIdigest\fR]
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[\fB\-signer\fR \fIfile\fR]
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[\fB\-certfile\fR \fIfile\fR]
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[\fB\-cades\fR]
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[\fB\-nodetach\fR]
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[\fB\-nocerts\fR]
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[\fB\-noattr\fR]
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[\fB\-nosmimecap\fR]
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[\fB\-receipt_request_all\fR]
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[\fB\-receipt_request_first\fR]
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[\fB\-receipt_request_from\fR \fIemailaddress\fR]
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[\fB\-receipt_request_to\fR \fIemailaddress\fR]
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.PP
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Verification options:
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.PP
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[\fB\-signer\fR \fIfile\fR]
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[\fB\-content\fR \fIfilename\fR]
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[\fB\-no_content_verify\fR]
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[\fB\-no_attr_verify\fR]
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[\fB\-nosigs\fR]
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[\fB\-noverify\fR]
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[\fB\-nointern\fR]
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[\fB\-cades\fR]
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[\fB\-verify_retcode\fR]
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[\fB\-CAfile\fR \fIfile\fR]
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[\fB\-no\-CAfile\fR]
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[\fB\-CApath\fR \fIdir\fR]
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[\fB\-no\-CApath\fR]
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[\fB\-CAstore\fR \fIuri\fR]
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[\fB\-no\-CAstore\fR]
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.PP
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Output options:
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.PP
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[\fB\-keyid\fR]
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[\fB\-econtent_type\fR \fItype\fR]
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[\fB\-text\fR]
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[\fB\-certsout\fR \fIfile\fR]
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[\fB\-to\fR \fIaddr\fR]
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[\fB\-from\fR \fIaddr\fR]
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[\fB\-subject\fR \fIsubj\fR]
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.PP
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Printing options:
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.PP
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[\fB\-noout\fR]
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[\fB\-print\fR]
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[\fB\-nameopt\fR \fIoption\fR]
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[\fB\-receipt_request_print\fR]
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.PP
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Validation options:
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.PP
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[\fB\-allow_proxy_certs\fR]
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[\fB\-attime\fR \fItimestamp\fR]
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[\fB\-no_check_time\fR]
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[\fB\-check_ss_sig\fR]
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[\fB\-crl_check\fR]
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[\fB\-crl_check_all\fR]
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[\fB\-explicit_policy\fR]
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[\fB\-extended_crl\fR]
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[\fB\-ignore_critical\fR]
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[\fB\-inhibit_any\fR]
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[\fB\-inhibit_map\fR]
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[\fB\-partial_chain\fR]
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[\fB\-policy\fR \fIarg\fR]
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[\fB\-policy_check\fR]
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[\fB\-policy_print\fR]
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[\fB\-purpose\fR \fIpurpose\fR]
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[\fB\-suiteB_128\fR]
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[\fB\-suiteB_128_only\fR]
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[\fB\-suiteB_192\fR]
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[\fB\-trusted_first\fR]
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[\fB\-no_alt_chains\fR]
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[\fB\-use_deltas\fR]
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[\fB\-auth_level\fR \fInum\fR]
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[\fB\-verify_depth\fR \fInum\fR]
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[\fB\-verify_email\fR \fIemail\fR]
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[\fB\-verify_hostname\fR \fIhostname\fR]
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[\fB\-verify_ip\fR \fIip\fR]
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[\fB\-verify_name\fR \fIname\fR]
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[\fB\-x509_strict\fR]
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[\fB\-issuer_checks\fR]
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.SH "DESCRIPTION"
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.IX Header "DESCRIPTION"
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This command handles data in \s-1CMS\s0 format such as S/MIME v3.1 email messages.
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It can encrypt, decrypt, sign, verify, compress, uncompress, and print messages.
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.SH "OPTIONS"
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.IX Header "OPTIONS"
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There are a number of operation options that set the type of operation to be
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performed: encrypt, decrypt, sign, verify, resign, sign_receipt, verify_receipt,
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digest_create, digest_verify, compress, uncompress,
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EncryptedData_encrypt, EncryptedData_decrypt, data_create, data_out, or cmsout.
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The relevance of the other options depends on the operation type
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and their meaning may vary according to it.
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.IP "\fB\-help\fR" 4
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.IX Item "-help"
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Print out a usage message.
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.SS "General options"
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.IX Subsection "General options"
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.IP "\fB\-in\fR \fIfilename\fR" 4
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.IX Item "-in filename"
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The input message to be encrypted or signed or the message to be decrypted
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or verified.
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.IP "\fB\-out\fR \fIfilename\fR" 4
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.IX Item "-out filename"
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The message text that has been decrypted or verified or the output \s-1MIME\s0
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format message that has been signed or verified.
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.IP "\fB\-config\fR \fIconfigfile\fR" 4
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.IX Item "-config configfile"
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See \*(L"Configuration Option\*(R" in \fIopenssl\fR\|(1).
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.SS "Operation options"
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.IX Subsection "Operation options"
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.IP "\fB\-encrypt\fR" 4
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.IX Item "-encrypt"
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Encrypt data for the given recipient certificates. Input file is the message
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to be encrypted. The output file is the encrypted data in \s-1MIME\s0 format. The
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actual \s-1CMS\s0 type is \fBEnvelopedData\fR.
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.Sp
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Note that no revocation check is done for the recipient cert, so if that
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key has been compromised, others may be able to decrypt the text.
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.IP "\fB\-decrypt\fR" 4
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.IX Item "-decrypt"
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Decrypt data using the supplied certificate and private key. Expects
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encrypted datain \s-1MIME\s0 format for the input file. The decrypted data
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is written to the output file.
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.IP "\fB\-sign\fR" 4
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.IX Item "-sign"
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Sign data using the supplied certificate and private key. Input file is
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the message to be signed. The signed data in \s-1MIME\s0 format is written
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to the output file.
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.IP "\fB\-verify\fR" 4
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.IX Item "-verify"
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Verify signed data. Expects a signed data on input and outputs
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the signed data. Both clear text and opaque signing is supported.
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.IP "\fB\-resign\fR" 4
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.IX Item "-resign"
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Resign a message: take an existing message and one or more new signers.
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.IP "\fB\-sign_receipt\fR" 4
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.IX Item "-sign_receipt"
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Generate and output a signed receipt for the supplied message. The input
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message \fBmust\fR contain a signed receipt request. Functionality is otherwise
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similar to the \fB\-sign\fR operation.
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.IP "\fB\-verify_receipt\fR \fIreceipt\fR" 4
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.IX Item "-verify_receipt receipt"
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Verify a signed receipt in filename \fBreceipt\fR. The input message \fBmust\fR
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contain the original receipt request. Functionality is otherwise similar
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to the \fB\-verify\fR operation.
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.IP "\fB\-digest\fR \fIdigest\fR" 4
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.IX Item "-digest digest"
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When used with \fB\-sign\fR, provides the digest in hexadecimal form instead of
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computing it from the original message content. Cannot be combined with \fB\-in\fR
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or \fB\-nodetach\fR.
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.Sp
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This operation is the \s-1CMS\s0 equivalent of \fIopenssl\-pkeyutl\fR\|(1) signing.
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When signing a pre-computed digest, the security relies on the digest and its
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computation from the original message being trusted.
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.IP "\fB\-digest_create\fR" 4
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.IX Item "-digest_create"
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Create a \s-1CMS \s0\fBDigestedData\fR type.
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.IP "\fB\-digest_verify\fR" 4
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.IX Item "-digest_verify"
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Verify a \s-1CMS \s0\fBDigestedData\fR type and output the content.
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.IP "\fB\-compress\fR" 4
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.IX Item "-compress"
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|
Create a \s-1CMS \s0\fBCompressedData\fR type. OpenSSL must be compiled with \fBzlib\fR
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support for this option to work, otherwise it will output an error.
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.IP "\fB\-uncompress\fR" 4
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.IX Item "-uncompress"
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Uncompress a \s-1CMS \s0\fBCompressedData\fR type and output the content. OpenSSL must be
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compiled with \fBzlib\fR support for this option to work, otherwise it will
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output an error.
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.IP "\fB\-EncryptedData_encrypt\fR" 4
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.IX Item "-EncryptedData_encrypt"
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Encrypt content using supplied symmetric key and algorithm using a \s-1CMS
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\&\s0\fBEncryptedData\fR type and output the content.
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.IP "\fB\-EncryptedData_decrypt\fR" 4
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.IX Item "-EncryptedData_decrypt"
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Decrypt content using supplied symmetric key and algorithm using a \s-1CMS
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\&\s0\fBEncryptedData\fR type and output the content.
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.IP "\fB\-data_create\fR" 4
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.IX Item "-data_create"
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Create a \s-1CMS \s0\fBData\fR type.
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.IP "\fB\-data_out\fR" 4
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.IX Item "-data_out"
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\&\fBData\fR type and output the content.
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.IP "\fB\-cmsout\fR" 4
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.IX Item "-cmsout"
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Takes an input message and writes out a \s-1PEM\s0 encoded \s-1CMS\s0 structure.
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.SS "File format options"
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.IX Subsection "File format options"
|
|
.IP "\fB\-inform\fR \fB\s-1DER\s0\fR|\fB\s-1PEM\s0\fR|\fB\s-1SMIME\s0\fR" 4
|
|
.IX Item "-inform DER|PEM|SMIME"
|
|
The input format of the \s-1CMS\s0 structure (if one is being read);
|
|
the default is \fB\s-1SMIME\s0\fR.
|
|
See \fIopenssl\-format\-options\fR\|(1) for details.
|
|
.IP "\fB\-outform\fR \fB\s-1DER\s0\fR|\fB\s-1PEM\s0\fR|\fB\s-1SMIME\s0\fR" 4
|
|
.IX Item "-outform DER|PEM|SMIME"
|
|
The output format of the \s-1CMS\s0 structure (if one is being written);
|
|
the default is \fB\s-1SMIME\s0\fR.
|
|
See \fIopenssl\-format\-options\fR\|(1) for details.
|
|
.IP "\fB\-rctform\fR \fB\s-1DER\s0\fR|\fB\s-1PEM\s0\fR|\fB\s-1SMIME\s0\fR" 4
|
|
.IX Item "-rctform DER|PEM|SMIME"
|
|
The signed receipt format for use with the \fB\-receipt_verify\fR; the default
|
|
is \fB\s-1SMIME\s0\fR.
|
|
See \fIopenssl\-format\-options\fR\|(1) for details.
|
|
.IP "\fB\-stream\fR, \fB\-indef\fR" 4
|
|
.IX Item "-stream, -indef"
|
|
The \fB\-stream\fR and \fB\-indef\fR options are equivalent and enable streaming I/O
|
|
for encoding operations. This permits single pass processing of data without
|
|
the need to hold the entire contents in memory, potentially supporting very
|
|
large files. Streaming is automatically set for S/MIME signing with detached
|
|
data if the output format is \fB\s-1SMIME\s0\fR it is currently off by default for all
|
|
other operations.
|
|
.IP "\fB\-noindef\fR" 4
|
|
.IX Item "-noindef"
|
|
Disable streaming I/O where it would produce and indefinite length constructed
|
|
encoding. This option currently has no effect. In future streaming will be
|
|
enabled by default on all relevant operations and this option will disable it.
|
|
.IP "\fB\-binary\fR" 4
|
|
.IX Item "-binary"
|
|
Normally the input message is converted to \*(L"canonical\*(R" format which is
|
|
effectively using \s-1CR\s0 and \s-1LF\s0 as end of line: as required by the S/MIME
|
|
specification. When this option is present no translation occurs. This
|
|
is useful when handling binary data which may not be in \s-1MIME\s0 format.
|
|
.IP "\fB\-crlfeol\fR" 4
|
|
.IX Item "-crlfeol"
|
|
Normally the output file uses a single \fB\s-1LF\s0\fR as end of line. When this
|
|
option is present \fB\s-1CRLF\s0\fR is used instead.
|
|
.IP "\fB\-asciicrlf\fR" 4
|
|
.IX Item "-asciicrlf"
|
|
When signing use \s-1ASCII CRLF\s0 format canonicalisation. This strips trailing
|
|
whitespace from all lines, deletes trailing blank lines at \s-1EOF\s0 and sets
|
|
the encapsulated content type. This option is normally used with detached
|
|
content and an output signature format of \s-1DER.\s0 This option is not normally
|
|
needed when verifying as it is enabled automatically if the encapsulated
|
|
content format is detected.
|
|
.SS "Keys and password options"
|
|
.IX Subsection "Keys and password options"
|
|
.IP "\fB\-pwri_password\fR \fIpassword\fR" 4
|
|
.IX Item "-pwri_password password"
|
|
Specify password for recipient.
|
|
.IP "\fB\-secretkey\fR \fIkey\fR" 4
|
|
.IX Item "-secretkey key"
|
|
Specify symmetric key to use. The key must be supplied in hex format and be
|
|
consistent with the algorithm used. Supported by the \fB\-EncryptedData_encrypt\fR
|
|
\&\fB\-EncryptedData_decrypt\fR, \fB\-encrypt\fR and \fB\-decrypt\fR options. When used
|
|
with \fB\-encrypt\fR or \fB\-decrypt\fR the supplied key is used to wrap or unwrap the
|
|
content encryption key using an \s-1AES\s0 key in the \fBKEKRecipientInfo\fR type.
|
|
.IP "\fB\-secretkeyid\fR \fIid\fR" 4
|
|
.IX Item "-secretkeyid id"
|
|
The key identifier for the supplied symmetric key for \fBKEKRecipientInfo\fR type.
|
|
This option \fBmust\fR be present if the \fB\-secretkey\fR option is used with
|
|
\&\fB\-encrypt\fR. With \fB\-decrypt\fR operations the \fIid\fR is used to locate the
|
|
relevant key if it is not supplied then an attempt is used to decrypt any
|
|
\&\fBKEKRecipientInfo\fR structures.
|
|
.IP "\fB\-inkey\fR \fIfilename\fR|\fIuri\fR" 4
|
|
.IX Item "-inkey filename|uri"
|
|
The private key to use when signing or decrypting. This must match the
|
|
corresponding certificate. If this option is not specified then the
|
|
private key must be included in the certificate file specified with
|
|
the \fB\-recip\fR or \fB\-signer\fR file. When signing this option can be used
|
|
multiple times to specify successive keys.
|
|
.IP "\fB\-passin\fR \fIarg\fR" 4
|
|
.IX Item "-passin arg"
|
|
The private key password source. For more information about the format of \fBarg\fR
|
|
see \fIopenssl\-passphrase\-options\fR\|(1).
|
|
.IP "\fB\-keyopt\fR \fIname\fR:\fIparameter\fR" 4
|
|
.IX Item "-keyopt name:parameter"
|
|
For signing and encryption this option can be used multiple times to
|
|
set customised parameters for the preceding key or certificate. It can
|
|
currently be used to set RSA-PSS for signing, RSA-OAEP for encryption
|
|
or to modify default parameters for \s-1ECDH.\s0
|
|
.IP "\fB\-keyform\fR \fB\s-1DER\s0\fR|\fB\s-1PEM\s0\fR|\fBP12\fR|\fB\s-1ENGINE\s0\fR" 4
|
|
.IX Item "-keyform DER|PEM|P12|ENGINE"
|
|
The format of the private key file; unspecified by default.
|
|
See \fIopenssl\-format\-options\fR\|(1) for details.
|
|
.IP "\fB\-engine\fR \fIid\fR" 4
|
|
.IX Item "-engine id"
|
|
See \*(L"Engine Options\*(R" in \fIopenssl\fR\|(1).
|
|
This option is deprecated.
|
|
.IP "\fB\-provider\fR \fIname\fR" 4
|
|
.IX Item "-provider name"
|
|
.PD 0
|
|
.IP "\fB\-provider\-path\fR \fIpath\fR" 4
|
|
.IX Item "-provider-path path"
|
|
.IP "\fB\-propquery\fR \fIpropq\fR" 4
|
|
.IX Item "-propquery propq"
|
|
.PD
|
|
See \*(L"Provider Options\*(R" in \fIopenssl\fR\|(1), \fIprovider\fR\|(7), and \fIproperty\fR\|(7).
|
|
.IP "\fB\-rand\fR \fIfiles\fR, \fB\-writerand\fR \fIfile\fR" 4
|
|
.IX Item "-rand files, -writerand file"
|
|
See \*(L"Random State Options\*(R" in \fIopenssl\fR\|(1) for details.
|
|
.SS "Encryption and decryption options"
|
|
.IX Subsection "Encryption and decryption options"
|
|
.IP "\fB\-originator\fR \fIfile\fR" 4
|
|
.IX Item "-originator file"
|
|
A certificate of the originator of the encrypted message. Necessary for
|
|
decryption when Key Agreement is in use for a shared key.
|
|
.IP "\fB\-recip\fR \fIfile\fR" 4
|
|
.IX Item "-recip file"
|
|
When decrypting a message this specifies the certificate of the recipient.
|
|
The certificate must match one of the recipients of the message.
|
|
.Sp
|
|
When encrypting a message this option may be used multiple times to specify
|
|
each recipient. This form \fBmust\fR be used if customised parameters are
|
|
required (for example to specify RSA-OAEP).
|
|
.Sp
|
|
Only certificates carrying \s-1RSA,\s0 Diffie-Hellman or \s-1EC\s0 keys are supported by this
|
|
option.
|
|
.IP "\fIrecipient-cert\fR ..." 4
|
|
.IX Item "recipient-cert ..."
|
|
This is an alternative to using the \fB\-recip\fR option when encrypting a message.
|
|
One or more certificate filenames may be given.
|
|
.IP "\fB\-\f(BIcipher\fB\fR" 4
|
|
.IX Item "-cipher"
|
|
The encryption algorithm to use. For example triple \s-1DES \s0(168 bits) \- \fB\-des3\fR
|
|
or 256 bit \s-1AES \- \s0\fB\-aes256\fR. Any standard algorithm name (as used by the
|
|
\&\fIEVP_get_cipherbyname()\fR function) can also be used preceded by a dash, for
|
|
example \fB\-aes\-128\-cbc\fR. See \fIopenssl\-enc\fR\|(1) for a list of ciphers
|
|
supported by your version of OpenSSL.
|
|
.Sp
|
|
Currently the \s-1AES\s0 variants with \s-1GCM\s0 mode are the only supported \s-1AEAD\s0
|
|
algorithms.
|
|
.Sp
|
|
If not specified triple \s-1DES\s0 is used. Only used with \fB\-encrypt\fR and
|
|
\&\fB\-EncryptedData_create\fR commands.
|
|
.IP "\fB\-wrap\fR \fIcipher\fR" 4
|
|
.IX Item "-wrap cipher"
|
|
Cipher algorithm to use for key wrap when encrypting the message using Key
|
|
Agreement for key transport. The algorithm specified should be suitable for key
|
|
wrap.
|
|
.IP "\fB\-aes128\-wrap\fR, \fB\-aes192\-wrap\fR, \fB\-aes256\-wrap\fR, \fB\-des3\-wrap\fR" 4
|
|
.IX Item "-aes128-wrap, -aes192-wrap, -aes256-wrap, -des3-wrap"
|
|
Use \s-1AES128, AES192, AES256,\s0 or 3DES\-EDE, respectively, to wrap key.
|
|
Depending on the OpenSSL build options used, \fB\-des3\-wrap\fR may not be supported.
|
|
.IP "\fB\-debug_decrypt\fR" 4
|
|
.IX Item "-debug_decrypt"
|
|
This option sets the \fB\s-1CMS_DEBUG_DECRYPT\s0\fR flag. This option should be used
|
|
with caution: see the notes section below.
|
|
.SS "Signing options"
|
|
.IX Subsection "Signing options"
|
|
.IP "\fB\-md\fR \fIdigest\fR" 4
|
|
.IX Item "-md digest"
|
|
Digest algorithm to use when signing or resigning. If not present then the
|
|
default digest algorithm for the signing key will be used (usually \s-1SHA1\s0).
|
|
.IP "\fB\-signer\fR \fIfile\fR" 4
|
|
.IX Item "-signer file"
|
|
A signing certificate. When signing or resigning a message, this option can be
|
|
used multiple times if more than one signer is required.
|
|
.IP "\fB\-certfile\fR \fIfile\fR" 4
|
|
.IX Item "-certfile file"
|
|
Allows additional certificates to be specified. When signing these will
|
|
be included with the message. When verifying these will be searched for
|
|
the signers certificates.
|
|
The input can be in \s-1PEM, DER,\s0 or PKCS#12 format.
|
|
.IP "\fB\-cades\fR" 4
|
|
.IX Item "-cades"
|
|
When used with \fB\-sign\fR,
|
|
add an \s-1ESS\s0 signingCertificate or \s-1ESS\s0 signingCertificateV2 signed-attribute
|
|
to the SignerInfo, in order to make the signature comply with the requirements
|
|
for a CAdES Basic Electronic Signature (CAdES-BES).
|
|
.IP "\fB\-nodetach\fR" 4
|
|
.IX Item "-nodetach"
|
|
When signing a message use opaque signing: this form is more resistant
|
|
to translation by mail relays but it cannot be read by mail agents that
|
|
do not support S/MIME. Without this option cleartext signing with
|
|
the \s-1MIME\s0 type multipart/signed is used.
|
|
.IP "\fB\-nocerts\fR" 4
|
|
.IX Item "-nocerts"
|
|
When signing a message the signer's certificate is normally included
|
|
with this option it is excluded. This will reduce the size of the
|
|
signed message but the verifier must have a copy of the signers certificate
|
|
available locally (passed using the \fB\-certfile\fR option for example).
|
|
.IP "\fB\-noattr\fR" 4
|
|
.IX Item "-noattr"
|
|
Normally when a message is signed a set of attributes are included which
|
|
include the signing time and supported symmetric algorithms. With this
|
|
option they are not included.
|
|
.IP "\fB\-nosmimecap\fR" 4
|
|
.IX Item "-nosmimecap"
|
|
Exclude the list of supported algorithms from signed attributes, other options
|
|
such as signing time and content type are still included.
|
|
.IP "\fB\-receipt_request_all\fR, \fB\-receipt_request_first\fR" 4
|
|
.IX Item "-receipt_request_all, -receipt_request_first"
|
|
For \fB\-sign\fR option include a signed receipt request. Indicate requests should
|
|
be provided by all recipient or first tier recipients (those mailed directly
|
|
and not from a mailing list). Ignored it \fB\-receipt_request_from\fR is included.
|
|
.IP "\fB\-receipt_request_from\fR \fIemailaddress\fR" 4
|
|
.IX Item "-receipt_request_from emailaddress"
|
|
For \fB\-sign\fR option include a signed receipt request. Add an explicit email
|
|
address where receipts should be supplied.
|
|
.IP "\fB\-receipt_request_to\fR \fIemailaddress\fR" 4
|
|
.IX Item "-receipt_request_to emailaddress"
|
|
Add an explicit email address where signed receipts should be sent to. This
|
|
option \fBmust\fR but supplied if a signed receipt is requested.
|
|
.SS "Verification options"
|
|
.IX Subsection "Verification options"
|
|
.IP "\fB\-signer\fR \fIfile\fR" 4
|
|
.IX Item "-signer file"
|
|
If a message has been verified successfully then the signers certificate(s)
|
|
will be written to this file if the verification was successful.
|
|
.IP "\fB\-content\fR \fIfilename\fR" 4
|
|
.IX Item "-content filename"
|
|
This specifies a file containing the detached content for operations taking
|
|
S/MIME input, such as the \fB\-verify\fR command. This is only usable if the \s-1CMS\s0
|
|
structure is using the detached signature form where the content is
|
|
not included. This option will override any content if the input format
|
|
is S/MIME and it uses the multipart/signed \s-1MIME\s0 content type.
|
|
.IP "\fB\-no_content_verify\fR" 4
|
|
.IX Item "-no_content_verify"
|
|
Do not verify signed content signatures.
|
|
.IP "\fB\-no_attr_verify\fR" 4
|
|
.IX Item "-no_attr_verify"
|
|
Do not verify signed attribute signatures.
|
|
.IP "\fB\-nosigs\fR" 4
|
|
.IX Item "-nosigs"
|
|
Don't verify message signature.
|
|
.IP "\fB\-noverify\fR" 4
|
|
.IX Item "-noverify"
|
|
Do not verify the signers certificate of a signed message.
|
|
.IP "\fB\-nointern\fR" 4
|
|
.IX Item "-nointern"
|
|
When verifying a message normally certificates (if any) included in
|
|
the message are searched for the signing certificate. With this option
|
|
only the certificates specified in the \fB\-certfile\fR option are used.
|
|
The supplied certificates can still be used as untrusted CAs however.
|
|
.IP "\fB\-cades\fR" 4
|
|
.IX Item "-cades"
|
|
When used with \fB\-verify\fR, require and check signer certificate digest.
|
|
See the \s-1NOTES\s0 section for more details.
|
|
.IP "\fB\-verify_retcode\fR" 4
|
|
.IX Item "-verify_retcode"
|
|
Exit nonzero on verification failure.
|
|
.IP "\fB\-CAfile\fR \fIfile\fR, \fB\-no\-CAfile\fR, \fB\-CApath\fR \fIdir\fR, \fB\-no\-CApath\fR, \fB\-CAstore\fR \fIuri\fR, \fB\-no\-CAstore\fR" 4
|
|
.IX Item "-CAfile file, -no-CAfile, -CApath dir, -no-CApath, -CAstore uri, -no-CAstore"
|
|
See \*(L"Trusted Certificate Options\*(R" in \fIopenssl\-verification\-options\fR\|(1) for details.
|
|
.SS "Output options"
|
|
.IX Subsection "Output options"
|
|
.IP "\fB\-keyid\fR" 4
|
|
.IX Item "-keyid"
|
|
Use subject key identifier to identify certificates instead of issuer name and
|
|
serial number. The supplied certificate \fBmust\fR include a subject key
|
|
identifier extension. Supported by \fB\-sign\fR and \fB\-encrypt\fR options.
|
|
.IP "\fB\-econtent_type\fR \fItype\fR" 4
|
|
.IX Item "-econtent_type type"
|
|
Set the encapsulated content type to \fItype\fR if not supplied the \fBData\fR type
|
|
is used. The \fItype\fR argument can be any valid \s-1OID\s0 name in either text or
|
|
numerical format.
|
|
.IP "\fB\-text\fR" 4
|
|
.IX Item "-text"
|
|
This option adds plain text (text/plain) \s-1MIME\s0 headers to the supplied
|
|
message if encrypting or signing. If decrypting or verifying it strips
|
|
off text headers: if the decrypted or verified message is not of \s-1MIME\s0
|
|
type text/plain then an error occurs.
|
|
.IP "\fB\-certsout\fR \fIfile\fR" 4
|
|
.IX Item "-certsout file"
|
|
Any certificates contained in the input message are written to \fIfile\fR.
|
|
.IP "\fB\-to\fR, \fB\-from\fR, \fB\-subject\fR" 4
|
|
.IX Item "-to, -from, -subject"
|
|
The relevant email headers. These are included outside the signed
|
|
portion of a message so they may be included manually. If signing
|
|
then many S/MIME mail clients check the signers certificate's email
|
|
address matches that specified in the From: address.
|
|
.SS "Printing options"
|
|
.IX Subsection "Printing options"
|
|
.IP "\fB\-noout\fR" 4
|
|
.IX Item "-noout"
|
|
For the \fB\-cmsout\fR operation do not output the parsed \s-1CMS\s0 structure.
|
|
This is useful if the syntax of the \s-1CMS\s0 structure is being checked.
|
|
.IP "\fB\-print\fR" 4
|
|
.IX Item "-print"
|
|
For the \fB\-cmsout\fR operation print out all fields of the \s-1CMS\s0 structure.
|
|
This implies \fB\-noout\fR.
|
|
This is mainly useful for testing purposes.
|
|
.IP "\fB\-nameopt\fR \fIoption\fR" 4
|
|
.IX Item "-nameopt option"
|
|
For the \fB\-cmsout\fR operation when \fB\-print\fR option is in use, specifies
|
|
printing options for string fields. For most cases \fButf8\fR is reasonable value.
|
|
See \fIopenssl\-namedisplay\-options\fR\|(1) for details.
|
|
.IP "\fB\-receipt_request_print\fR" 4
|
|
.IX Item "-receipt_request_print"
|
|
For the \fB\-verify\fR operation print out the contents of any signed receipt
|
|
requests.
|
|
.SS "Validation options"
|
|
.IX Subsection "Validation options"
|
|
.IP "\fB\-allow_proxy_certs\fR, \fB\-attime\fR, \fB\-no_check_time\fR, \fB\-check_ss_sig\fR, \fB\-crl_check\fR, \fB\-crl_check_all\fR, \fB\-explicit_policy\fR, \fB\-extended_crl\fR, \fB\-ignore_critical\fR, \fB\-inhibit_any\fR, \fB\-inhibit_map\fR, \fB\-no_alt_chains\fR, \fB\-partial_chain\fR, \fB\-policy\fR, \fB\-policy_check\fR, \fB\-policy_print\fR, \fB\-purpose\fR, \fB\-suiteB_128\fR, \fB\-suiteB_128_only\fR, \fB\-suiteB_192\fR, \fB\-trusted_first\fR, \fB\-use_deltas\fR, \fB\-auth_level\fR, \fB\-verify_depth\fR, \fB\-verify_email\fR, \fB\-verify_hostname\fR, \fB\-verify_ip\fR, \fB\-verify_name\fR, \fB\-x509_strict\fR \fB\-issuer_checks\fR" 4
|
|
.IX Item "-allow_proxy_certs, -attime, -no_check_time, -check_ss_sig, -crl_check, -crl_check_all, -explicit_policy, -extended_crl, -ignore_critical, -inhibit_any, -inhibit_map, -no_alt_chains, -partial_chain, -policy, -policy_check, -policy_print, -purpose, -suiteB_128, -suiteB_128_only, -suiteB_192, -trusted_first, -use_deltas, -auth_level, -verify_depth, -verify_email, -verify_hostname, -verify_ip, -verify_name, -x509_strict -issuer_checks"
|
|
Set various options of certificate chain verification.
|
|
See \*(L"Verification Options\*(R" in \fIopenssl\-verification\-options\fR\|(1) for details.
|
|
.Sp
|
|
Any validation errors cause the command to exit.
|
|
.SH "NOTES"
|
|
.IX Header "NOTES"
|
|
The \s-1MIME\s0 message must be sent without any blank lines between the
|
|
headers and the output. Some mail programs will automatically add
|
|
a blank line. Piping the mail directly to sendmail is one way to
|
|
achieve the correct format.
|
|
.PP
|
|
The supplied message to be signed or encrypted must include the
|
|
necessary \s-1MIME\s0 headers or many S/MIME clients won't display it
|
|
properly (if at all). You can use the \fB\-text\fR option to automatically
|
|
add plain text headers.
|
|
.PP
|
|
A \*(L"signed and encrypted\*(R" message is one where a signed message is
|
|
then encrypted. This can be produced by encrypting an already signed
|
|
message: see the examples section.
|
|
.PP
|
|
This version of the program only allows one signer per message but it
|
|
will verify multiple signers on received messages. Some S/MIME clients
|
|
choke if a message contains multiple signers. It is possible to sign
|
|
messages \*(L"in parallel\*(R" by signing an already signed message.
|
|
.PP
|
|
The options \fB\-encrypt\fR and \fB\-decrypt\fR reflect common usage in S/MIME
|
|
clients. Strictly speaking these process \s-1CMS\s0 enveloped data: \s-1CMS\s0
|
|
encrypted data is used for other purposes.
|
|
.PP
|
|
The \fB\-resign\fR option uses an existing message digest when adding a new
|
|
signer. This means that attributes must be present in at least one existing
|
|
signer using the same message digest or this operation will fail.
|
|
.PP
|
|
The \fB\-stream\fR and \fB\-indef\fR options enable streaming I/O support.
|
|
As a result the encoding is \s-1BER\s0 using indefinite length constructed encoding
|
|
and no longer \s-1DER.\s0 Streaming is supported for the \fB\-encrypt\fR operation and the
|
|
\&\fB\-sign\fR operation if the content is not detached.
|
|
.PP
|
|
Streaming is always used for the \fB\-sign\fR operation with detached data but
|
|
since the content is no longer part of the \s-1CMS\s0 structure the encoding
|
|
remains \s-1DER.\s0
|
|
.PP
|
|
If the \fB\-decrypt\fR option is used without a recipient certificate then an
|
|
attempt is made to locate the recipient by trying each potential recipient
|
|
in turn using the supplied private key. To thwart the \s-1MMA\s0 attack
|
|
(Bleichenbacher's attack on \s-1PKCS\s0 #1 v1.5 \s-1RSA\s0 padding) all recipients are
|
|
tried whether they succeed or not and if no recipients match the message
|
|
is \*(L"decrypted\*(R" using a random key which will typically output garbage.
|
|
The \fB\-debug_decrypt\fR option can be used to disable the \s-1MMA\s0 attack protection
|
|
and return an error if no recipient can be found: this option should be used
|
|
with caution. For a fuller description see \fICMS_decrypt\fR\|(3)).
|
|
.SH "CADES BASIC ELECTRONIC SIGNATURE (CADES-BES)"
|
|
.IX Header "CADES BASIC ELECTRONIC SIGNATURE (CADES-BES)"
|
|
A CAdES Basic Electronic Signature (CAdES-BES),
|
|
as defined in the European Standard \s-1ETSI EN 319 122\-1 V1.1.1,\s0 contains:
|
|
.IP "\(bu" 4
|
|
The signed user data as defined in \s-1CMS \s0(\s-1RFC 3852\s0);
|
|
.IP "\(bu" 4
|
|
Content-type of the EncapsulatedContentInfo value being signed;
|
|
.IP "\(bu" 4
|
|
Message-digest of the eContent \s-1OCTET STRING\s0 within encapContentInfo being signed;
|
|
.IP "\(bu" 4
|
|
An \s-1ESS\s0 signingCertificate or \s-1ESS\s0 signingCertificateV2 attribute,
|
|
as defined in Enhanced Security Services (\s-1ESS\s0), \s-1RFC 2634\s0 and \s-1RFC 5035.\s0
|
|
An \s-1ESS\s0 signingCertificate attribute only allows for \s-1SHA\-1\s0 as digest algorithm.
|
|
An \s-1ESS\s0 signingCertificateV2 attribute allows for any digest algorithm.
|
|
.IP "\(bu" 4
|
|
The digital signature value computed on the user data and, when present, on the signed attributes.
|
|
.Sp
|
|
\&\s-1NOTE\s0 that the \fB\-cades\fR option applies to the \fB\-sign\fR or \fB\-verify\fR operations.
|
|
With this option, the \fB\-verify\fR operation also requires that the
|
|
signingCertificate attribute is present and checks that the given identifiers
|
|
match the verification trust chain built during the verification process.
|
|
.SH "EXIT CODES"
|
|
.IX Header "EXIT CODES"
|
|
.IP "0" 4
|
|
The operation was completely successfully.
|
|
.IP "1" 4
|
|
.IX Item "1"
|
|
An error occurred parsing the command options.
|
|
.IP "2" 4
|
|
.IX Item "2"
|
|
One of the input files could not be read.
|
|
.IP "3" 4
|
|
.IX Item "3"
|
|
An error occurred creating the \s-1CMS\s0 file or when reading the \s-1MIME\s0
|
|
message.
|
|
.IP "4" 4
|
|
.IX Item "4"
|
|
An error occurred decrypting or verifying the message.
|
|
.IP "5" 4
|
|
.IX Item "5"
|
|
The message was verified correctly but an error occurred writing out
|
|
the signers certificates.
|
|
.SH "COMPATIBILITY WITH PKCS#7 FORMAT"
|
|
.IX Header "COMPATIBILITY WITH PKCS#7 FORMAT"
|
|
\&\fIopenssl\-smime\fR\|(1) can only process the older \fBPKCS#7\fR format.
|
|
\&\fBopenssl cms\fR supports Cryptographic Message Syntax format.
|
|
Use of some features will result in messages which cannot be processed by
|
|
applications which only support the older format. These are detailed below.
|
|
.PP
|
|
The use of the \fB\-keyid\fR option with \fB\-sign\fR or \fB\-encrypt\fR.
|
|
.PP
|
|
The \fB\-outform\fR \fI\s-1PEM\s0\fR option uses different headers.
|
|
.PP
|
|
The \fB\-compress\fR option.
|
|
.PP
|
|
The \fB\-secretkey\fR option when used with \fB\-encrypt\fR.
|
|
.PP
|
|
The use of \s-1PSS\s0 with \fB\-sign\fR.
|
|
.PP
|
|
The use of \s-1OAEP\s0 or non-RSA keys with \fB\-encrypt\fR.
|
|
.PP
|
|
Additionally the \fB\-EncryptedData_create\fR and \fB\-data_create\fR type cannot
|
|
be processed by the older \fIopenssl\-smime\fR\|(1) command.
|
|
.SH "EXAMPLES"
|
|
.IX Header "EXAMPLES"
|
|
Create a cleartext signed message:
|
|
.PP
|
|
.Vb 2
|
|
\& openssl cms \-sign \-in message.txt \-text \-out mail.msg \e
|
|
\& \-signer mycert.pem
|
|
.Ve
|
|
.PP
|
|
Create an opaque signed message
|
|
.PP
|
|
.Vb 2
|
|
\& openssl cms \-sign \-in message.txt \-text \-out mail.msg \-nodetach \e
|
|
\& \-signer mycert.pem
|
|
.Ve
|
|
.PP
|
|
Create a signed message, include some additional certificates and
|
|
read the private key from another file:
|
|
.PP
|
|
.Vb 2
|
|
\& openssl cms \-sign \-in in.txt \-text \-out mail.msg \e
|
|
\& \-signer mycert.pem \-inkey mykey.pem \-certfile mycerts.pem
|
|
.Ve
|
|
.PP
|
|
Create a signed message with two signers, use key identifier:
|
|
.PP
|
|
.Vb 2
|
|
\& openssl cms \-sign \-in message.txt \-text \-out mail.msg \e
|
|
\& \-signer mycert.pem \-signer othercert.pem \-keyid
|
|
.Ve
|
|
.PP
|
|
Send a signed message under Unix directly to sendmail, including headers:
|
|
.PP
|
|
.Vb 3
|
|
\& openssl cms \-sign \-in in.txt \-text \-signer mycert.pem \e
|
|
\& \-from steve@openssl.org \-to someone@somewhere \e
|
|
\& \-subject "Signed message" | sendmail someone@somewhere
|
|
.Ve
|
|
.PP
|
|
Verify a message and extract the signer's certificate if successful:
|
|
.PP
|
|
.Vb 1
|
|
\& openssl cms \-verify \-in mail.msg \-signer user.pem \-out signedtext.txt
|
|
.Ve
|
|
.PP
|
|
Send encrypted mail using triple \s-1DES:\s0
|
|
.PP
|
|
.Vb 3
|
|
\& openssl cms \-encrypt \-in in.txt \-from steve@openssl.org \e
|
|
\& \-to someone@somewhere \-subject "Encrypted message" \e
|
|
\& \-des3 user.pem \-out mail.msg
|
|
.Ve
|
|
.PP
|
|
Sign and encrypt mail:
|
|
.PP
|
|
.Vb 4
|
|
\& openssl cms \-sign \-in ml.txt \-signer my.pem \-text \e
|
|
\& | openssl cms \-encrypt \-out mail.msg \e
|
|
\& \-from steve@openssl.org \-to someone@somewhere \e
|
|
\& \-subject "Signed and Encrypted message" \-des3 user.pem
|
|
.Ve
|
|
.PP
|
|
Note: the encryption command does not include the \fB\-text\fR option because the
|
|
message being encrypted already has \s-1MIME\s0 headers.
|
|
.PP
|
|
Decrypt a message:
|
|
.PP
|
|
.Vb 1
|
|
\& openssl cms \-decrypt \-in mail.msg \-recip mycert.pem \-inkey key.pem
|
|
.Ve
|
|
.PP
|
|
The output from Netscape form signing is a PKCS#7 structure with the
|
|
detached signature format. You can use this program to verify the
|
|
signature by line wrapping the base64 encoded structure and surrounding
|
|
it with:
|
|
.PP
|
|
.Vb 2
|
|
\& \-\-\-\-\-BEGIN PKCS7\-\-\-\-\-
|
|
\& \-\-\-\-\-END PKCS7\-\-\-\-\-
|
|
.Ve
|
|
.PP
|
|
and using the command,
|
|
.PP
|
|
.Vb 1
|
|
\& openssl cms \-verify \-inform PEM \-in signature.pem \-content content.txt
|
|
.Ve
|
|
.PP
|
|
alternatively you can base64 decode the signature and use
|
|
.PP
|
|
.Vb 1
|
|
\& openssl cms \-verify \-inform DER \-in signature.der \-content content.txt
|
|
.Ve
|
|
.PP
|
|
Create an encrypted message using 128 bit Camellia:
|
|
.PP
|
|
.Vb 1
|
|
\& openssl cms \-encrypt \-in plain.txt \-camellia128 \-out mail.msg cert.pem
|
|
.Ve
|
|
.PP
|
|
Add a signer to an existing message:
|
|
.PP
|
|
.Vb 1
|
|
\& openssl cms \-resign \-in mail.msg \-signer newsign.pem \-out mail2.msg
|
|
.Ve
|
|
.PP
|
|
Sign a message using RSA-PSS:
|
|
.PP
|
|
.Vb 2
|
|
\& openssl cms \-sign \-in message.txt \-text \-out mail.msg \e
|
|
\& \-signer mycert.pem \-keyopt rsa_padding_mode:pss
|
|
.Ve
|
|
.PP
|
|
Create an encrypted message using RSA-OAEP:
|
|
.PP
|
|
.Vb 2
|
|
\& openssl cms \-encrypt \-in plain.txt \-out mail.msg \e
|
|
\& \-recip cert.pem \-keyopt rsa_padding_mode:oaep
|
|
.Ve
|
|
.PP
|
|
Use \s-1SHA256 KDF\s0 with an \s-1ECDH\s0 certificate:
|
|
.PP
|
|
.Vb 2
|
|
\& openssl cms \-encrypt \-in plain.txt \-out mail.msg \e
|
|
\& \-recip ecdhcert.pem \-keyopt ecdh_kdf_md:sha256
|
|
.Ve
|
|
.PP
|
|
Print \s-1CMS\s0 signed binary data in human-readable form:
|
|
.PP
|
|
openssl cms \-in signed.cms \-binary \-inform \s-1DER\s0 \-cmsout \-print
|
|
.SH "BUGS"
|
|
.IX Header "BUGS"
|
|
The \s-1MIME\s0 parser isn't very clever: it seems to handle most messages that I've
|
|
thrown at it but it may choke on others.
|
|
.PP
|
|
The code currently will only write out the signer's certificate to a file: if
|
|
the signer has a separate encryption certificate this must be manually
|
|
extracted. There should be some heuristic that determines the correct
|
|
encryption certificate.
|
|
.PP
|
|
Ideally a database should be maintained of a certificates for each email
|
|
address.
|
|
.PP
|
|
The code doesn't currently take note of the permitted symmetric encryption
|
|
algorithms as supplied in the SMIMECapabilities signed attribute. this means the
|
|
user has to manually include the correct encryption algorithm. It should store
|
|
the list of permitted ciphers in a database and only use those.
|
|
.PP
|
|
No revocation checking is done on the signer's certificate.
|
|
.SH "SEE ALSO"
|
|
.IX Header "SEE ALSO"
|
|
\&\fIossl_store\-file\fR\|(7)
|
|
.SH "HISTORY"
|
|
.IX Header "HISTORY"
|
|
The use of multiple \fB\-signer\fR options and the \fB\-resign\fR command were first
|
|
added in OpenSSL 1.0.0.
|
|
.PP
|
|
The \fB\-keyopt\fR option was added in OpenSSL 1.0.2.
|
|
.PP
|
|
Support for RSA-OAEP and RSA-PSS was added in OpenSSL 1.0.2.
|
|
.PP
|
|
The use of non-RSA keys with \fB\-encrypt\fR and \fB\-decrypt\fR
|
|
was added in OpenSSL 1.0.2.
|
|
.PP
|
|
The \-no_alt_chains option was added in OpenSSL 1.0.2b.
|
|
.PP
|
|
The \fB\-nameopt\fR option was added in OpenSSL 3.0.0.
|
|
.PP
|
|
The \fB\-engine\fR option was deprecated in OpenSSL 3.0.
|
|
.PP
|
|
The \fB\-digest\fR option was added in OpenSSL 3.2.
|
|
.SH "COPYRIGHT"
|
|
.IX Header "COPYRIGHT"
|
|
Copyright 2008\-2023 The OpenSSL Project Authors. All Rights Reserved.
|
|
.PP
|
|
Licensed under the Apache License 2.0 (the \*(L"License\*(R"). You may not use
|
|
this file except in compliance with the License. You can obtain a copy
|
|
in the file \s-1LICENSE\s0 in the source distribution or at
|
|
<https://www.openssl.org/source/license.html>.
|