Verify sigret over tbs in one call using a prepared DigestVerify context.

Synopsis

Declared in <openssl/evp.h>

int
EVP_DigestVerify(
    EVP_MD_CTX* ctx,
    unsigned char const* sigret,
    size_t siglen,
    unsigned char const* tbs,
    size_t tbslen);

Return Value

1 if the signature is valid, 0 if it is invalid, or a negative value on error.

Parameters

Name

Description

ctx

Context initialized with EVP_DigestVerifyInit().

sigret

Signature bytes to verify.

siglen

Length of sigret in bytes.

tbs

Message bytes that were signed ("to be signed").

tbslen

Length of tbs in bytes.

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