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Add sha256 support

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This imports the sha256 code from http://www.ouah.org/ogay/sha2/ (The other
hashes from sha-2 were removed). sha256 is a much stronger hashing algorithm
than md5 is (There were successful birthday attacks against md5).

All the code now defaults to creating sha256 salted hashes (The salting used is
the same as before).

Old znc.conf files can still be read.


git-svn-id: https://znc.svn.sourceforge.net/svnroot/znc/trunk@1618 726aef4b-f618-498e-8847-2d620e286838
This commit is contained in:
psychon
2009-09-07 18:55:07 +00:00
parent cfe64df399
commit cd63bae006
13 changed files with 380 additions and 34 deletions
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23
ZNCString.cpp
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@@ -8,8 +8,9 @@
#include "ZNCString.h"
#include "FileUtils.h"
#include "MD5.h"
#include "Utils.h"
#include "MD5.h"
#include "SHA256.h"
#include <sstream>
using std::stringstream;
@@ -867,6 +868,26 @@ CString CString::MD5() const {
return (const char*) CMD5(*this);
}
CString CString::SHA256() const {
unsigned char digest[SHA256_DIGEST_SIZE];
char digest_hex[SHA256_DIGEST_SIZE * 2 + 1];
const unsigned char *message = (const unsigned char *) c_str();
sha256(message, length(), digest);
sprintf(digest_hex,
"%02x%02x%02x%02x%02x%02x%02x%02x"
"%02x%02x%02x%02x%02x%02x%02x%02x"
"%02x%02x%02x%02x%02x%02x%02x%02x"
"%02x%02x%02x%02x%02x%02x%02x%02x",
digest[ 0], digest[ 1], digest[ 2], digest[ 3], digest[ 4], digest[ 5], digest[ 6], digest[ 7],
digest[ 8], digest[ 9], digest[10], digest[11], digest[12], digest[13], digest[14], digest[15],
digest[16], digest[17], digest[18], digest[19], digest[20], digest[21], digest[22], digest[23],
digest[24], digest[25], digest[26], digest[27], digest[28], digest[29], digest[30], digest[31]);
return digest_hex;
}
#ifdef HAVE_LIBSSL
CString CString::Encrypt_n(const CString& sPass, const CString& sIvec) {
CString sRet;