sha1_final
ret = sha1_final(&(ctx->sha1ctx), output); EG(ret, err);
ret = sha1_final(&ctx, output);
ret = sha1_final(&ctx, output);
ATTRIBUTE_WARN_UNUSED_RET int sha1_final(sha1_context *ctx, u8 output[SHA1_DIGEST_SIZE]);
LEGACY_EVP_MD_METH_TABLE(sha1_init, sha1_update, sha1_final, sha1_int_ctrl,