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static VALUE ossl_pkey_sign(VALUE self, VALUE digest, VALUE data) { EVP_PKEY *pkey; EVP_MD_CTX ctx; unsigned int buf_len; VALUE str; if (rb_funcall(self, id_private_q, 0, NULL) != Qtrue) { ossl_raise(rb_eArgError, "Private key is needed."); } GetPKey(self, pkey); EVP_SignInit(&ctx, GetDigestPtr(digest)); StringValue(data); EVP_SignUpdate(&ctx, RSTRING_PTR(data), RSTRING_LEN(data)); str = rb_str_new(0, EVP_PKEY_size(pkey)+16); if (!EVP_SignFinal(&ctx, (unsigned char *)RSTRING_PTR(str), &buf_len, pkey)) ossl_raise(ePKeyError, NULL); assert((long)buf_len <= RSTRING_LEN(str)); rb_str_set_len(str, buf_len); return str; }
static VALUE ossl_pkey_verify(VALUE self, VALUE digest, VALUE sig, VALUE data) { EVP_PKEY *pkey; EVP_MD_CTX ctx; GetPKey(self, pkey); EVP_VerifyInit(&ctx, GetDigestPtr(digest)); StringValue(sig); StringValue(data); EVP_VerifyUpdate(&ctx, RSTRING_PTR(data), RSTRING_LEN(data)); switch (EVP_VerifyFinal(&ctx, (unsigned char *)RSTRING_PTR(sig), RSTRING_LEN(sig), pkey)) { case 0: return Qfalse; case 1: return Qtrue; default: ossl_raise(ePKeyError, NULL); } return Qnil; /* dummy */ }