Example #1
0
def getDirectorySignature(directory, pkey):
    digest = mixminion.ServerInfo._getMultisignedDirectoryDigest(directory)
    signature = pk_sign(digest, pkey)
    encKey = formatBase64(pk_encode_public_key(pkey))
    encSig = formatBase64(signature)
    encDigest = formatBase64(digest)
    return ("[Signed-Directory]\nDirectory-Identity: %s\n"
            "Directory-Digest: %s\nDirectory-Signature: %s\n")%(
        encKey,encDigest,encSig)
Example #2
0
def getDirectorySignature(directory, pkey):
    digest = mixminion.ServerInfo._getMultisignedDirectoryDigest(directory)
    signature = pk_sign(digest, pkey)
    encKey = formatBase64(pk_encode_public_key(pkey))
    encSig = formatBase64(signature)
    encDigest = formatBase64(digest)
    return ("[Signed-Directory]\nDirectory-Identity: %s\n"
            "Directory-Digest: %s\nDirectory-Signature: %s\n")%(
        encKey,encDigest,encSig)
Example #3
0
def _getDigestImpl(info, regex, digestField=None, sigField=None, rsa=None):
    """Helper method.  Calculates the correct digest of a server descriptor
       or directory
       (as provided in a string).  If rsa is provided, signs the digest and
       creates a new descriptor.  Otherwise just returns the digest.

       info -- the string to digest or sign.
       regex -- a compiled regex that matches the line containing the digest
          and the line containing the signature.
       digestField -- If not signing, None.  Otherwise, the name of the digest
          field.
       sigField -- If not signing, None.  Otherwise, the name of the signature
          field.
       rsa -- our public key
       """
    info = _cleanForDigest(info)

    def replaceFn(m):
        s = m.group(0)
        return s[:s.index(':') + 1]

    info = regex.sub(replaceFn, info, 2)
    digest = sha1(info)

    if rsa is None:
        return digest

    signature = pk_sign(digest, rsa)
    digest = formatBase64(digest)
    signature = formatBase64(signature)

    def replaceFn2(s,
                   digest=digest,
                   signature=signature,
                   digestField=digestField,
                   sigField=sigField):
        if s.group(0).startswith(digestField):
            return "%s: %s" % (digestField, digest)
        else:
            assert s.group(0).startswith(sigField)
            return "%s: %s" % (sigField, signature)

    info = regex.sub(replaceFn2, info, 2)
    return info
Example #4
0
def _getDigestImpl(info, regex, digestField=None, sigField=None, rsa=None):
    """Helper method.  Calculates the correct digest of a server descriptor
       or directory
       (as provided in a string).  If rsa is provided, signs the digest and
       creates a new descriptor.  Otherwise just returns the digest.

       info -- the string to digest or sign.
       regex -- a compiled regex that matches the line containing the digest
          and the line containing the signature.
       digestField -- If not signing, None.  Otherwise, the name of the digest
          field.
       sigField -- If not signing, None.  Otherwise, the name of the signature
          field.
       rsa -- our public key
       """
    info = _cleanForDigest(info)
    def replaceFn(m):
        s = m.group(0)
        return s[:s.index(':')+1]
    info = regex.sub(replaceFn, info, 2)
    digest = sha1(info)

    if rsa is None:
        return digest

    signature = pk_sign(digest,rsa)
    digest = formatBase64(digest)
    signature = formatBase64(signature)
    def replaceFn2(s, digest=digest, signature=signature,
                   digestField=digestField, sigField=sigField):
        if s.group(0).startswith(digestField):
            return "%s: %s" % (digestField, digest)
        else:
            assert s.group(0).startswith(sigField)
            return "%s: %s" % (sigField, signature)

    info = regex.sub(replaceFn2, info, 2)
    return info