diff options
Diffstat (limited to 'deps/openssl/openssl/doc/crypto/EVP_DigestSignInit.pod')
| -rw-r--r-- | deps/openssl/openssl/doc/crypto/EVP_DigestSignInit.pod | 45 |
1 files changed, 43 insertions, 2 deletions
diff --git a/deps/openssl/openssl/doc/crypto/EVP_DigestSignInit.pod b/deps/openssl/openssl/doc/crypto/EVP_DigestSignInit.pod index 7ec06b7a27..5fadc82e6a 100644 --- a/deps/openssl/openssl/doc/crypto/EVP_DigestSignInit.pod +++ b/deps/openssl/openssl/doc/crypto/EVP_DigestSignInit.pod @@ -21,7 +21,48 @@ EVP_DigestSignInit() sets up signing context B<ctx> to use digest B<type> from ENGINE B<impl> and private key B<pkey>. B<ctx> must be created with EVP_MD_CTX_new() before calling this function. If B<pctx> is not NULL the EVP_PKEY_CTX of the signing operation will be written to B<*pctx>: this can -be used to set alternative signing options. +be used to set alternative signing options. The digest B<type> may be NULL if +the signing algorithm supports it. + +Only EVP_PKEY types that support signing can be used with these functions. This +includes MAC algorithms where the MAC generation is considered as a form of +"signing." Built-in EVP_PKEY types supported by these functions are CMAC, DSA, +ECDSA, HMAC and RSA. + +Not all digests can be used for all key types. The following combinations apply. + +=over 4 + +=item DSA + +Supports SHA1, SHA224, SHA256, SHA384 and SHA512 + +=item ECDSA + +Supports SHA1, SHA224, SHA256, SHA384 and SHA512 + +=item RSA with no padding + +Supports no digests (the digest B<type> must be NULL) + +=item RSA with X931 padding + +Supports SHA1, SHA256, SHA384 and SHA512 + +=item All other RSA padding types + +Support SHA1, SHA224, SHA256, SHA384, SHA512, MD5, MD5_SHA1, MD2, MD4, MDC2, +RIPEMD160 + +=item HMAC + +Supports any digest + +=item CMAC + +Will ignore any digest provided. + +=back EVP_DigestSignUpdate() hashes B<cnt> bytes of data at B<d> into the signature context B<ctx>. This function can be called several times on the @@ -86,7 +127,7 @@ were first added to OpenSSL 1.0.0. =head1 COPYRIGHT -Copyright 2006-2017 The OpenSSL Project Authors. All Rights Reserved. +Copyright 2006-2018 The OpenSSL Project Authors. All Rights Reserved. Licensed under the OpenSSL license (the "License"). You may not use this file except in compliance with the License. You can obtain a copy |