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EVP.pyo
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Python Compiled Bytecode
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2008-10-13
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10KB
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270 lines
# Source Generated with Decompyle++
# File: in.pyo (Python 2.5)
from M2Crypto import Err, util, BIO, RSA
import m2
class EVPError(Exception):
pass
m2.evp_init(EVPError)
def pbkdf2(password, salt, iter, keylen):
return m2.pkcs5_pbkdf2_hmac_sha1(password, salt, iter, keylen)
class MessageDigest:
m2_md_ctx_free = m2.md_ctx_free
def __init__(self, algo):
md = getattr(m2, algo, None)
if md is None:
raise ValueError, ('unknown algorithm', algo)
self.md = md()
self.ctx = m2.md_ctx_new()
m2.digest_init(self.ctx, self.md)
def __del__(self):
if getattr(self, 'ctx', None):
self.m2_md_ctx_free(self.ctx)
def update(self, data):
return m2.digest_update(self.ctx, data)
def final(self):
return m2.digest_final(self.ctx)
digest = final
class HMAC:
m2_hmac_ctx_free = m2.hmac_ctx_free
def __init__(self, key, algo = 'sha1'):
md = getattr(m2, algo, None)
if md is None:
raise ValueError, ('unknown algorithm', algo)
self.md = md()
self.ctx = m2.hmac_ctx_new()
m2.hmac_init(self.ctx, key, self.md)
def __del__(self):
if getattr(self, 'ctx', None):
self.m2_hmac_ctx_free(self.ctx)
def reset(self, key):
m2.hmac_init(self.ctx, key, self.md)
def update(self, data):
m2.hmac_update(self.ctx, data)
def final(self):
return m2.hmac_final(self.ctx)
digest = final
def hmac(key, data, algo = 'sha1'):
md = getattr(m2, algo, None)
if md is None:
raise ValueError, ('unknown algorithm', algo)
return m2.hmac(key, data, md())
class Cipher:
m2_cipher_ctx_free = m2.cipher_ctx_free
def __init__(self, alg, key, iv, op, key_as_bytes = 0, d = 'md5', salt = '12345678', i = 1):
cipher = getattr(m2, alg, None)
if cipher is None:
raise ValueError, ('unknown cipher', alg)
self.cipher = cipher()
if key_as_bytes:
kmd = getattr(m2, d, None)
if kmd is None:
raise ValueError, ('unknown message digest', d)
key = m2.bytes_to_key(self.cipher, kmd(), key, salt, iv, i)
self.ctx = m2.cipher_ctx_new()
m2.cipher_init(self.ctx, self.cipher, key, iv, op)
del key
def __del__(self):
if getattr(self, 'ctx', None):
self.m2_cipher_ctx_free(self.ctx)
def update(self, data):
return m2.cipher_update(self.ctx, data)
def final(self):
return m2.cipher_final(self.ctx)
class PKey:
m2_pkey_free = m2.pkey_free
m2_md_ctx_free = m2.md_ctx_free
def __init__(self, pkey = None, _pyfree = 0, md = 'sha1'):
if pkey is not None:
self.pkey = pkey
self._pyfree = _pyfree
else:
self.pkey = m2.pkey_new()
self._pyfree = 1
self._set_context(md)
def __del__(self):
if getattr(self, '_pyfree', 0):
self.m2_pkey_free(self.pkey)
if getattr(self, 'ctx', None):
self.m2_md_ctx_free(self.ctx)
def _ptr(self):
return self.pkey
def _set_context(self, md):
mda = getattr(m2, md, None)
if mda is None:
raise ValueError, ('unknown message digest', md)
self.md = mda()
self.ctx = m2.md_ctx_new()
def reset_context(self, md = 'sha1'):
self._set_context(md)
def sign_init(self):
m2.sign_init(self.ctx, self.md)
def sign_update(self, data):
m2.sign_update(self.ctx, data)
def sign_final(self):
return m2.sign_final(self.ctx, self.pkey)
update = sign_update
final = sign_final
def verify_init(self):
m2.verify_init(self.ctx, self.md)
def verify_update(self, data):
return m2.verify_update(self.ctx, data)
def verify_final(self, sign):
return m2.verify_final(self.ctx, sign, self.pkey)
def assign_rsa(self, rsa, capture = 1):
if capture:
ret = m2.pkey_assign_rsa(self.pkey, rsa.rsa)
if ret:
rsa._pyfree = 0
else:
ret = m2.pkey_set1_rsa(self.pkey, rsa.rsa)
return ret
def get_rsa(self):
rsa_ptr = m2.pkey_get1_rsa(self.pkey)
if rsa_ptr is None:
raise ValueError('PKey instance is not holding a RSA key')
rsa = RSA.RSA(rsa_ptr, 1)
return rsa
def save_key(self, file, cipher = 'aes_128_cbc', callback = util.passphrase_callback):
bio = BIO.openfile(file, 'wb')
return self.save_key_bio(bio, cipher, callback)
def save_key_bio(self, bio, cipher = 'aes_128_cbc', callback = util.passphrase_callback):
if cipher is None:
return m2.pkey_write_pem_no_cipher(self.pkey, bio._ptr(), callback)
else:
proto = getattr(m2, cipher, None)
if proto is None:
raise ValueError, 'no such cipher %s' % cipher
return m2.pkey_write_pem(self.pkey, bio._ptr(), proto(), callback)
def as_pem(self, cipher = 'aes_128_cbc', callback = util.passphrase_callback):
bio = BIO.MemoryBuffer()
self.save_key_bio(bio, cipher, callback)
return bio.read_all()
def as_der(self):
buf = m2.pkey_as_der(self.pkey)
bio = BIO.MemoryBuffer(buf)
return bio.read_all()
def size(self):
return m2.pkey_size(self.pkey)
def get_modulus(self):
return m2.pkey_get_modulus(self.pkey)
def load_key(file, callback = util.passphrase_callback):
bio = m2.bio_new_file(file, 'r')
if bio is None:
raise Err.get_error()
cptr = m2.pkey_read_pem(bio, callback)
m2.bio_free(bio)
if cptr is None:
raise Err.get_error()
return PKey(cptr, 1)
def load_key_bio(bio, callback = util.passphrase_callback):
cptr = m2.pkey_read_pem(bio._ptr(), callback)
if cptr is None:
raise Err.get_error()
return PKey(cptr, 1)
def load_key_string(string, callback = util.passphrase_callback):
bio = BIO.MemoryBuffer(string)
return load_key_bio(bio, callback)