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| author | David Woodhouse <dwmw2@infradead.org> | 2018-10-22 18:49:54 +0100 |
|---|---|---|
| committer | Nicola Tuveri <nic.tuv@gmail.com> | 2018-11-10 03:23:14 +0200 |
| commit | ecbb2fca9301ef22b15beb30c4c0303b29846935 (patch) | |
| tree | 28568a5d29802e457a3ca4285f5945ed2508069a /crypto/evp | |
| parent | 2d263a4a73f852005b16359873475d48755999ad (diff) | |
| download | openssl-ecbb2fca9301ef22b15beb30c4c0303b29846935.tar.gz | |
Add EVP_PKEY_supports_digest_nid()
Rather than relying only on mandatory default digests, add a way for
the EVP_PKEY to individually report whether each digest algorithm is
supported.
Reviewed-by: Nicola Tuveri <nic.tuv@gmail.com>
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7408)
Diffstat (limited to 'crypto/evp')
| -rw-r--r-- | crypto/evp/p_lib.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/crypto/evp/p_lib.c b/crypto/evp/p_lib.c index 154ef788e8..c8f3264408 100644 --- a/crypto/evp/p_lib.c +++ b/crypto/evp/p_lib.c @@ -667,6 +667,26 @@ int EVP_PKEY_get_default_digest_nid(EVP_PKEY *pkey, int *pnid) return evp_pkey_asn1_ctrl(pkey, ASN1_PKEY_CTRL_DEFAULT_MD_NID, 0, pnid); } +int EVP_PKEY_supports_digest_nid(EVP_PKEY *pkey, int nid) +{ + int rv, default_nid; + + rv = evp_pkey_asn1_ctrl(pkey, ASN1_PKEY_CTRL_SUPPORTS_MD_NID, nid, NULL); + if (rv == -2) { + /* + * If there is a mandatory default digest and this isn't it, then + * the answer is 'no'. + */ + rv = EVP_PKEY_get_default_digest_nid(pkey, &default_nid); + if (rv == 2) + return (nid == default_nid); + /* zero is an error from EVP_PKEY_get_default_digest_nid() */ + if (rv == 0) + return -1; + } + return rv; +} + int EVP_PKEY_set1_tls_encodedpoint(EVP_PKEY *pkey, const unsigned char *pt, size_t ptlen) { |