Object
static VALUE
ossl_hmac_s_digest(VALUE klass, VALUE digest, VALUE key, VALUE data)
{
unsigned char *buf;
unsigned int buf_len;
StringValue(key);
StringValue(data);
buf = HMAC(GetDigestPtr(digest), RSTRING_PTR(key), RSTRING_LEN(key),
(unsigned char *)RSTRING_PTR(data), RSTRING_LEN(data), NULL, &buf_len);
return rb_str_new((const char *)buf, buf_len);
}
static VALUE
ossl_hmac_s_hexdigest(VALUE klass, VALUE digest, VALUE key, VALUE data)
{
unsigned char *buf;
char *hexbuf;
unsigned int buf_len;
VALUE hexdigest;
StringValue(key);
StringValue(data);
buf = HMAC(GetDigestPtr(digest), RSTRING_PTR(key), RSTRING_LEN(key),
(unsigned char *)RSTRING_PTR(data), RSTRING_LEN(data), NULL, &buf_len);
if (string2hex(buf, buf_len, &hexbuf, NULL) != 2 * buf_len) {
ossl_raise(eHMACError, "Cannot convert buf to hexbuf");
}
hexdigest = ossl_buf2str(hexbuf, 2 * buf_len);
return hexdigest;
}
static VALUE
ossl_hmac_digest(VALUE self)
{
HMAC_CTX *ctx;
unsigned char *buf;
unsigned int buf_len;
VALUE digest;
GetHMAC(self, ctx);
hmac_final(ctx, &buf, &buf_len);
digest = ossl_buf2str((char *)buf, buf_len);
return digest;
}
static VALUE
ossl_hmac_hexdigest(VALUE self)
{
HMAC_CTX *ctx;
unsigned char *buf;
char *hexbuf;
unsigned int buf_len;
VALUE hexdigest;
GetHMAC(self, ctx);
hmac_final(ctx, &buf, &buf_len);
if (string2hex(buf, buf_len, &hexbuf, NULL) != 2 * buf_len) {
OPENSSL_free(buf);
ossl_raise(eHMACError, "Memory alloc error");
}
OPENSSL_free(buf);
hexdigest = ossl_buf2str(hexbuf, 2 * buf_len);
return hexdigest;
}
static VALUE
ossl_hmac_reset(VALUE self)
{
HMAC_CTX *ctx;
GetHMAC(self, ctx);
HMAC_Init_ex(ctx, NULL, 0, NULL, NULL);
return self;
}
static VALUE
ossl_hmac_update(VALUE self, VALUE data)
{
HMAC_CTX *ctx;
StringValue(data);
GetHMAC(self, ctx);
HMAC_Update(ctx, (unsigned char *)RSTRING_PTR(data), RSTRING_LEN(data));
return self;
}