238 lines
8.7 KiB
Plaintext
238 lines
8.7 KiB
Plaintext
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.\" ========================================================================
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.\"
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.IX Title "PKCS12_PBE_KEYIVGEN 3ossl"
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.TH PKCS12_PBE_KEYIVGEN 3ossl "2024-01-30" "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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PKCS12_PBE_keyivgen, PKCS12_PBE_keyivgen_ex,
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PKCS12_pbe_crypt, PKCS12_pbe_crypt_ex \- PKCS#12 Password based encryption
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.SH "SYNOPSIS"
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.IX Header "SYNOPSIS"
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.Vb 1
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\& #include <openssl/evp.h>
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\&
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\& int PKCS12_PBE_keyivgen(EVP_CIPHER_CTX *ctx, const char *pass, int passlen,
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\& ASN1_TYPE *param, const EVP_CIPHER *cipher,
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\& const EVP_MD *md_type, int en_de);
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\& int PKCS12_PBE_keyivgen_ex(EVP_CIPHER_CTX *ctx, const char *pass, int passlen,
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\& ASN1_TYPE *param, const EVP_CIPHER *cipher,
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\& const EVP_MD *md_type, int en_de,
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\& OSSL_LIB_CTX *libctx, const char *propq);
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\& unsigned char *PKCS12_pbe_crypt(const X509_ALGOR *algor,
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\& const char *pass, int passlen,
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\& const unsigned char *in, int inlen,
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\& unsigned char **data, int *datalen,
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\& int en_de);
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\& unsigned char *PKCS12_pbe_crypt_ex(const X509_ALGOR *algor,
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\& const char *pass, int passlen,
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\& const unsigned char *in, int inlen,
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\& unsigned char **data, int *datalen,
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\& int en_de, OSSL_LIB_CTX *libctx,
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\& const char *propq);
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.Ve
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.SH "DESCRIPTION"
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.IX Header "DESCRIPTION"
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\&\fIPKCS12_PBE_keyivgen()\fR and \fIPKCS12_PBE_keyivgen_ex()\fR take a password \fIpass\fR of
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length \fIpasslen\fR, parameters \fIparam\fR and a message digest function \fImd_type\fR
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and perform a key derivation according to PKCS#12. The resulting key is
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then used to initialise the cipher context \fIctx\fR with a cipher \fIcipher\fR for
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encryption (\fIen_de\fR=1) or decryption (\fIen_de\fR=0).
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.PP
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\&\fIPKCS12_PBE_keyivgen_ex()\fR also allows the application to specify a library context
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\&\fIlibctx\fR and property query \fIpropq\fR to select appropriate algorithm
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implementations.
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.PP
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\&\fIPKCS12_pbe_crypt()\fR and \fIPKCS12_pbe_crypt_ex()\fR will encrypt or decrypt a buffer
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based on the algorithm in \fIalgor\fR and password \fIpass\fR of length \fIpasslen\fR.
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The input is from \fIin\fR of length \fIinlen\fR and output is into a malloc'd buffer
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returned in \fI*data\fR of length \fIdatalen\fR. The operation is determined by \fIen_de\fR,
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encryption (\fIen_de\fR=1) or decryption (\fIen_de\fR=0).
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.PP
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\&\fIPKCS12_pbe_crypt_ex()\fR allows the application to specify a library context
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\&\fIlibctx\fR and property query \fIpropq\fR to select appropriate algorithm
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implementations.
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.PP
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\&\fIpass\fR is the password used in the derivation of length \fIpasslen\fR. \fIpass\fR
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is an optional parameter and can be \s-1NULL.\s0 If \fIpasslen\fR is \-1, then the
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function will calculate the length of \fIpass\fR using \fIstrlen()\fR.
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.PP
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\&\fIsalt\fR is the salt used in the derivation of length \fIsaltlen\fR. If the
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\&\fIsalt\fR is \s-1NULL,\s0 then \fIsaltlen\fR must be 0. The function will not
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attempt to calculate the length of the \fIsalt\fR because it is not assumed to
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be \s-1NULL\s0 terminated.
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.PP
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\&\fIiter\fR is the iteration count and its value should be greater than or
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equal to 1. \s-1RFC 2898\s0 suggests an iteration count of at least 1000. Any
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\&\fIiter\fR less than 1 is treated as a single iteration.
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.PP
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\&\fIdigest\fR is the message digest function used in the derivation.
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.PP
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Functions ending in \fI_ex()\fR take optional parameters \fIlibctx\fR and \fIpropq\fR which
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are used to select appropriate algorithm implementations.
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.SH "NOTES"
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.IX Header "NOTES"
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The functions are typically used in PKCS#12 to encrypt objects.
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.PP
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These functions make no assumption regarding the given password.
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It will simply be treated as a byte sequence.
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.SH "RETURN VALUES"
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.IX Header "RETURN VALUES"
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\&\fIPKCS12_PBE_keyivgen()\fR, \fIPKCS12_PBE_keyivgen_ex()\fR return 1 on success or 0 on error.
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.PP
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\&\fIPKCS12_pbe_crypt()\fR and \fIPKCS12_pbe_crypt_ex()\fR return a buffer containing the
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output or \s-1NULL\s0 if an error occurred.
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.SH "CONFORMING TO"
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.IX Header "CONFORMING TO"
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\&\s-1IETF RFC 7292 \s0(<https://tools.ietf.org/html/rfc7292>)
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.SH "SEE ALSO"
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.IX Header "SEE ALSO"
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\&\fIEVP_PBE_CipherInit_ex\fR\|(3),
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\&\fIPKCS8_encrypt_ex\fR\|(3),
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\&\fIpassphrase\-encoding\fR\|(7)
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.SH "HISTORY"
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.IX Header "HISTORY"
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\&\fIPKCS12_PBE_keyivgen_ex()\fR and \fIPKCS12_pbe_crypt_ex()\fR were added in OpenSSL 3.0.
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.SH "COPYRIGHT"
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.IX Header "COPYRIGHT"
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Copyright 2014\-2021 The OpenSSL Project Authors. All Rights Reserved.
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.PP
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Licensed under the Apache License 2.0 (the \*(L"License\*(R"). You may not use
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this file except in compliance with the License. You can obtain a copy
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in the file \s-1LICENSE\s0 in the source distribution or at
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<https://www.openssl.org/source/license.html>.
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