Method: OpenSSL::HMAC#reset

Defined in:

ossl_hmac.c

#reset ⇒ self

Returns hmac as it was when it was first initialized, with all processed data cleared from it.

Example

data = “The quick brown fox jumps over the lazy dog” instance = OpenSSL::HMAC.new(‘key’, ‘SHA1’) #=> f42bb0eeb018ebbd4597ae7213711ec60760843f

instance.update(data) #=> de7c9b85b8b78aa6bc8a7a36f70a90701c9db4d9 instance.reset #=> f42bb0eeb018ebbd4597ae7213711ec60760843f

Returns:

• (self)

# File 'ossl_hmac.c', line 242

static VALUE
ossl_hmac_reset(VALUE self)
{
    EVP_MD_CTX *ctx;
    EVP_PKEY *pkey;

    GetHMAC(self, ctx);
    pkey = EVP_PKEY_CTX_get0_pkey(EVP_MD_CTX_get_pkey_ctx(ctx));
    if (EVP_DigestSignInit(ctx, NULL, EVP_MD_CTX_get0_md(ctx), NULL, pkey) != 1)
        ossl_raise(eHMACError, "EVP_DigestSignInit");

    return self;
}