/*
* call-seq:
* Digest.new(string) -> digest
*
*/
static VALUE
ossl_digest_initialize(VALUE self, SEL sel, int argc, VALUE *argv)
{
EVP_MD_CTX *ctx;
const EVP_MD *md;
VALUE type, data;
rb_scan_args(argc, argv, "11", &type, &data);
md = GetDigestPtr(type);
if (!NIL_P(data)) StringValue(data);
GetDigest(self, ctx);
EVP_DigestInit_ex(ctx, md, NULL);
if (!NIL_P(data)) return ossl_digest_update(self, 0, data);
return self;
}
/*
* call-seq:
* Digest.new(string [, data]) -> Digest
*
* Creates a Digest instance based on +string+, which is either the ln
* (long name) or sn (short name) of a supported digest algorithm.
* If +data+ (a +String+) is given, it is used as the initial input to the
* Digest instance, i.e.
* digest = OpenSSL::Digest.new('sha256', 'digestdata')
* is equal to
* digest = OpenSSL::Digest.new('sha256')
* digest.update('digestdata')
*
* === Example
* digest = OpenSSL::Digest.new('sha1')
*
*
*/
static VALUE
ossl_digest_initialize(int argc, VALUE *argv, VALUE self)
{
EVP_MD_CTX *ctx;
const EVP_MD *md;
VALUE type, data;
rb_scan_args(argc, argv, "11", &type, &data);
md = GetDigestPtr(type);
if (!NIL_P(data)) StringValue(data);
GetDigest(self, ctx);
if (EVP_DigestInit_ex(ctx, md, NULL) != 1) {
ossl_raise(eDigestError, "Digest initialization failed.");
}
if (!NIL_P(data)) return ossl_digest_update(self, data);
return self;
}
/*
* call-seq:
* Digest.new(string) -> digest
*
*/
static VALUE
ossl_digest_initialize(int argc, VALUE *argv, VALUE self)
{
EVP_MD_CTX *ctx;
const EVP_MD *md;
char *name;
VALUE type, data;
rb_scan_args(argc, argv, "11", &type, &data);
StringValue(type);
if (!NIL_P(data)) StringValue(data);
name = StringValuePtr(type);
md = EVP_get_digestbyname(name);
if (!md) {
ossl_raise(rb_eRuntimeError, "Unsupported digest algorithm (%s).", name);
}
GetDigest(self, ctx);
EVP_DigestInit_ex(ctx, md, NULL);
if (!NIL_P(data)) return ossl_digest_update(self, data);
return self;
}
