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Diffstat (limited to 'doc/crypto/EVP_DigestSignInit.pod')
| -rw-r--r-- | doc/crypto/EVP_DigestSignInit.pod | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/doc/crypto/EVP_DigestSignInit.pod b/doc/crypto/EVP_DigestSignInit.pod index 83e65894d9d98..7a3e84d0f6426 100644 --- a/doc/crypto/EVP_DigestSignInit.pod +++ b/doc/crypto/EVP_DigestSignInit.pod @@ -19,9 +19,12 @@ The EVP signature routines are a high level interface to digital signatures. 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 initialized with -EVP_MD_CTX_init() before calling this function. If B<pctx> is not NULL the +EVP_MD_CTX_init() 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. Note that any existing value in +B<*pctx> is overwritten. The EVP_PKEY_CTX value returned must not be freed +directly by the application (it will be freed automatically when the EVP_MD_CTX +is freed). The digest B<type> may be NULL if the signing algorithm supports it. 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 |