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Returns keysize in bits #691

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Returns keysize in bits #691

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14db821
Adding utility to return the actual bit size of the key. Especially n…
Antrapol Oct 29, 2023
7ff3737
Reformat the source code and create new test cases for keysize_in_bits
Antrapol Nov 13, 2023
b92ee8b
Missed one place to in test case ec
Antrapol Nov 13, 2023
0b3fe97
Seems the reporting of keysize is not consistent across different Ope…
Antrapol Nov 14, 2023
370b2f1
Add condition to test keysize in bits since OpenSSL version 1.1.1 ret…
Antrapol Nov 14, 2023
fb17bc9
Tested local seems ed25519 also returned 253 as bit size
Antrapol Nov 14, 2023
db2ac8a
Not getting consistance result on ED25519 keysize
Antrapol Nov 15, 2023
5ce7e11
Change name to bits instead of keysize_in_bits and remove some additi…
Antrapol Nov 16, 2023
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31 changes: 31 additions & 0 deletions ext/openssl/ossl_pkey.c
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Original file line number Diff line number Diff line change
Expand Up @@ -737,6 +737,32 @@ ossl_pkey_inspect(VALUE self)
OBJ_nid2sn(nid));
}

/*
* call-seq:
* pkey.keysize_in_bits -> integer
*
* Returns an integer representing cryptographic length of the cryptosystem to which the key
* in _pkey_ belongs, in bits.
*
* See man page EVP_PKEY_get_bits(3)
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*/
static VALUE
ossl_pkey_length_in_bits(VALUE self)
{
EVP_PKEY * pkey;
int bits;

GetPKey(self, pkey);

#if OSSL_OPENSSL_PREREQ(3, 0, 0)
bits = EVP_PKEY_get_bits(pkey);
#else
bits = EVP_PKEY_bits(pkey);
#endif
return INT2NUM(bits);

}
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/*
* call-seq:
* pkey.to_text -> string
Expand Down Expand Up @@ -1666,6 +1692,8 @@ ossl_pkey_decrypt(int argc, VALUE *argv, VALUE self)
return str;
}



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/*
* INIT
*/
Expand Down Expand Up @@ -1765,6 +1793,7 @@ Init_ossl_pkey(void)
#endif
rb_define_method(cPKey, "oid", ossl_pkey_oid, 0);
rb_define_method(cPKey, "inspect", ossl_pkey_inspect, 0);
rb_define_method(cPKey, "keysize_in_bits", ossl_pkey_length_in_bits, 0);
rb_define_method(cPKey, "to_text", ossl_pkey_to_text, 0);
rb_define_method(cPKey, "private_to_der", ossl_pkey_private_to_der, -1);
rb_define_method(cPKey, "private_to_pem", ossl_pkey_private_to_pem, -1);
Expand All @@ -1785,6 +1814,8 @@ Init_ossl_pkey(void)
rb_define_method(cPKey, "encrypt", ossl_pkey_encrypt, -1);
rb_define_method(cPKey, "decrypt", ossl_pkey_decrypt, -1);



id_private_q = rb_intern("private?");

/*
Expand Down
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