Finalize a digest computation and write the message digest to md without resetting ownership of ctx.

Synopsis

Declared in <openssl/evp.h>

int
EVP_DigestFinal_ex(
    EVP_MD_CTX* ctx,
    unsigned char* md,
    unsigned int* s);

Description

Unlike EVP_DigestFinal(), the context may be reused after EVP_MD_CTX_reset() without freeing it.

Return Value

1 on success, or 0 on failure.

Parameters

Name

Description

ctx

Digest context that has absorbed input via EVP_DigestUpdate().

md

Buffer that receives the digest; must be large enough for EVP_MD_CTX_get_size(ctx) bytes.

s

Optional destination for the digest length in bytes, or NULL.

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