diff options
| author | Tomas Mraz <tomas@openssl.org> | 2021-11-05 14:14:45 +0100 |
|---|---|---|
| committer | Tomas Mraz <tomas@openssl.org> | 2021-11-12 16:42:41 +0100 |
| commit | 487934081d87a0d02bbb9afd6bd650d5d1afe8ea (patch) | |
| tree | f58b13641833f3ba2910e9ca6216cd6cce9540de /doc | |
| parent | bef4e21fe247753484b26167897afce1dc8cd10c (diff) | |
doc: Document outcome of multiple digestsign/digestverify calls
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/16964)
(cherry picked from commit 3641f04fb06e9679a67da113bab65e5f1bb5e9ba)
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/man3/EVP_DigestSignInit.pod | 7 | ||||
| -rw-r--r-- | doc/man3/EVP_DigestVerifyInit.pod | 9 |
2 files changed, 9 insertions, 7 deletions
diff --git a/doc/man3/EVP_DigestSignInit.pod b/doc/man3/EVP_DigestSignInit.pod index c8385949fb..228e9d1c5f 100644 --- a/doc/man3/EVP_DigestSignInit.pod +++ b/doc/man3/EVP_DigestSignInit.pod @@ -167,9 +167,10 @@ The call to EVP_DigestSignFinal() internally finalizes a copy of the digest context. This means that calls to EVP_DigestSignUpdate() and EVP_DigestSignFinal() can be called later to digest and sign additional data. -Since only a copy of the digest context is ever finalized, the context must -be cleaned up after use by calling EVP_MD_CTX_free() or a memory leak -will occur. +EVP_DigestSignInit() and EVP_DigestSignInit_ex() functions can be called +multiple times on a context and the parameters set by previous calls should be +preserved if the I<pkey> parameter is NULL. The call then just resets the state +of the I<ctx>. The use of EVP_PKEY_get_size() with these functions is discouraged because some signature operations may have a signature length which depends on the diff --git a/doc/man3/EVP_DigestVerifyInit.pod b/doc/man3/EVP_DigestVerifyInit.pod index 9a02f12e37..398146b5b8 100644 --- a/doc/man3/EVP_DigestVerifyInit.pod +++ b/doc/man3/EVP_DigestVerifyInit.pod @@ -57,7 +57,7 @@ EVP_MD_CTX is freed). If the EVP_PKEY_CTX to be used is created by EVP_DigestVerifyInit_ex then it will use the B<OSSL_LIB_CTX> specified in I<libctx> and the property query string specified in I<props>. -No B<EVP_PKEY_CTX> will be created by EVP_DigestSignInit_ex() if the +No B<EVP_PKEY_CTX> will be created by EVP_DigestVerifyInit_ex() if the passed B<ctx> has already been assigned one via L<EVP_MD_CTX_set_pkey_ctx(3)>. See also L<SM2(7)>. @@ -156,9 +156,10 @@ The call to EVP_DigestVerifyFinal() internally finalizes a copy of the digest context. This means that EVP_VerifyUpdate() and EVP_VerifyFinal() can be called later to digest and verify additional data. -Since only a copy of the digest context is ever finalized, the context must -be cleaned up after use by calling EVP_MD_CTX_free() or a memory leak -will occur. +EVP_DigestVerifyInit() and EVP_DigestVerifyInit_ex() functions can be called +multiple times on a context and the parameters set by previous calls should be +preserved if the I<pkey> parameter is NULL. The call then just resets the state +of the I<ctx>. =head1 SEE ALSO |