235 lines
7.5 KiB
Plaintext
235 lines
7.5 KiB
Plaintext
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.\" ========================================================================
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.\"
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.IX Title "OSSL_PROVIDER-LEGACY 7ossl"
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.TH OSSL_PROVIDER-LEGACY 7ossl "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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OSSL_PROVIDER\-legacy \- OpenSSL legacy provider
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.SH "DESCRIPTION"
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.IX Header "DESCRIPTION"
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The OpenSSL legacy provider supplies OpenSSL implementations of algorithms
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that have been deemed legacy. Such algorithms have commonly fallen out of
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use, have been deemed insecure by the cryptography community, or something
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similar.
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.PP
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We can consider this the retirement home of cryptographic algorithms.
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.SS "Properties"
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.IX Subsection "Properties"
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The implementations in this provider specifically has this property
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defined:
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.ie n .IP """provider=legacy""" 4
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.el .IP "``provider=legacy''" 4
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.IX Item "provider=legacy"
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.PP
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It may be used in a property query string with fetching functions such as
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\&\fIEVP_MD_fetch\fR\|(3) or \fIEVP_CIPHER_fetch\fR\|(3), as well as with other
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functions that take a property query string, such as
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\&\fIEVP_PKEY_CTX_new_from_name\fR\|(3).
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.PP
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It isn't mandatory to query for any of these properties, except to
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make sure to get implementations of this provider and none other.
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.SH "OPERATIONS AND ALGORITHMS"
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.IX Header "OPERATIONS AND ALGORITHMS"
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The OpenSSL legacy provider supports these operations and algorithms:
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.SS "Hashing Algorithms / Message Digests"
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.IX Subsection "Hashing Algorithms / Message Digests"
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.IP "\s-1MD2,\s0 see \s-1\fIEVP_MD\-MD2\s0\fR\|(7)" 4
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.IX Item "MD2, see EVP_MD-MD2"
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Disabled by default. Use \fIenable\-md2\fR config option to enable.
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.IP "\s-1MD4,\s0 see \s-1\fIEVP_MD\-MD4\s0\fR\|(7)" 4
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.IX Item "MD4, see EVP_MD-MD4"
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.PD 0
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.IP "\s-1MDC2,\s0 see \s-1\fIEVP_MD\-MDC2\s0\fR\|(7)" 4
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.IX Item "MDC2, see EVP_MD-MDC2"
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.IP "\s-1WHIRLPOOL,\s0 see \s-1\fIEVP_MD\-WHIRLPOOL\s0\fR\|(7)" 4
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.IX Item "WHIRLPOOL, see EVP_MD-WHIRLPOOL"
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.IP "\s-1RIPEMD160,\s0 see \s-1\fIEVP_MD\-RIPEMD160\s0\fR\|(7)" 4
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.IX Item "RIPEMD160, see EVP_MD-RIPEMD160"
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.PD
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.SS "Symmetric Ciphers"
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.IX Subsection "Symmetric Ciphers"
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Not all of these symmetric cipher algorithms are enabled by default.
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.IP "Blowfish, see \s-1\fIEVP_CIPHER\-BLOWFISH\s0\fR\|(7)" 4
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.IX Item "Blowfish, see EVP_CIPHER-BLOWFISH"
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.PD 0
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.IP "\s-1CAST,\s0 see \s-1\fIEVP_CIPHER\-CAST\s0\fR\|(7)" 4
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.IX Item "CAST, see EVP_CIPHER-CAST"
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.IP "\s-1DES,\s0 see \s-1\fIEVP_CIPHER\-DES\s0\fR\|(7)" 4
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.IX Item "DES, see EVP_CIPHER-DES"
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.PD
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The algorithm names are: \s-1DES_ECB, DES_CBC, DES_OFB, DES_CFB, DES_CFB1, DES_CFB8\s0
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and \s-1DESX_CBC.\s0
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.IP "\s-1IDEA,\s0 see \s-1\fIEVP_CIPHER\-IDEA\s0\fR\|(7)" 4
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.IX Item "IDEA, see EVP_CIPHER-IDEA"
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.PD 0
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.IP "\s-1RC2,\s0 see \s-1\fIEVP_CIPHER\-RC2\s0\fR\|(7)" 4
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.IX Item "RC2, see EVP_CIPHER-RC2"
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.IP "\s-1RC4,\s0 see \s-1\fIEVP_CIPHER\-RC4\s0\fR\|(7)" 4
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.IX Item "RC4, see EVP_CIPHER-RC4"
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.IP "\s-1RC5,\s0 see \s-1\fIEVP_CIPHER\-RC5\s0\fR\|(7)" 4
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.IX Item "RC5, see EVP_CIPHER-RC5"
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.PD
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Disabled by default. Use \fIenable\-rc5\fR config option to enable.
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.IP "\s-1SEED,\s0 see \s-1\fIEVP_CIPHER\-SEED\s0\fR\|(7)" 4
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.IX Item "SEED, see EVP_CIPHER-SEED"
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.SS "Key Derivation Function (\s-1KDF\s0)"
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.IX Subsection "Key Derivation Function (KDF)"
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.PD 0
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.IP "\s-1PBKDF1\s0" 4
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.IX Item "PBKDF1"
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.IP "\s-1PVKKDF\s0" 4
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.IX Item "PVKKDF"
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.PD
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.SH "SEE ALSO"
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.IX Header "SEE ALSO"
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\&\s-1\fIOSSL_PARAM\s0\fR\|(3),
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\&\fIopenssl\-core.h\fR\|(7),
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\&\fIopenssl\-core_dispatch.h\fR\|(7),
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\&\fIprovider\fR\|(7)
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.SH "HISTORY"
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.IX Header "HISTORY"
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This functionality was added in OpenSSL 3.0.
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.SH "COPYRIGHT"
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.IX Header "COPYRIGHT"
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Copyright 2020\-2023 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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