private_encrypt(p1, p2 = v2)
public
Encrypt string with the private key. padding defaults to
PKCS1_PADDING. The encrypted string output can be decrypted using #public_decrypt.
static VALUE
ossl_rsa_private_encrypt(int argc, VALUE *argv, VALUE self)
{
EVP_PKEY *pkey;
int buf_len, pad;
VALUE str, buffer, padding;
GetPKeyRSA(self, pkey);
if (!RSA_PRIVATE(self, pkey->pkey.rsa)) {
ossl_raise(eRSAError, "private key needed.");
}
rb_scan_args(argc, argv, "11", &buffer, &padding);
pad = (argc == 1) ? RSA_PKCS1_PADDING : NUM2INT(padding);
StringValue(buffer);
str = rb_str_new(0, ossl_rsa_buf_size(pkey));
buf_len = RSA_private_encrypt(RSTRING_LENINT(buffer), (unsigned char *)RSTRING_PTR(buffer),
(unsigned char *)RSTRING_PTR(str), pkey->pkey.rsa,
pad);
if (buf_len < 0) ossl_raise(eRSAError, NULL);
rb_str_set_len(str, buf_len);
return str;
}