faset over fra Z3950 til google books

2010-09-23 13:57:37 +00:00
parent d173b9396e
commit 644e79f9b5
221 changed files with 60948 additions and 27273 deletions
--- a/python/gdata/tlslite/utils/OpenSSL_RSAKey.py
+++ b/python/gdata/tlslite/utils/OpenSSL_RSAKey.py
@@ -0,0 +1,148 @@
+"""OpenSSL/M2Crypto RSA implementation."""
+
+from cryptomath import *
+
+from RSAKey import *
+from Python_RSAKey import Python_RSAKey
+
+#copied from M2Crypto.util.py, so when we load the local copy of m2
+#we can still use it
+def password_callback(v, prompt1='Enter private key passphrase:',
+                           prompt2='Verify passphrase:'):
+    from getpass import getpass
+    while 1:
+        try:
+            p1=getpass(prompt1)
+            if v:
+                p2=getpass(prompt2)
+                if p1==p2:
+                    break
+            else:
+                break
+        except KeyboardInterrupt:
+            return None
+    return p1
+
+
+if m2cryptoLoaded:
+    class OpenSSL_RSAKey(RSAKey):
+        def __init__(self, n=0, e=0):
+            self.rsa = None
+            self._hasPrivateKey = False
+            if (n and not e) or (e and not n):
+                raise AssertionError()
+            if n and e:
+                self.rsa = m2.rsa_new()
+                m2.rsa_set_n(self.rsa, numberToMPI(n))
+                m2.rsa_set_e(self.rsa, numberToMPI(e))
+
+        def __del__(self):
+            if self.rsa:
+                m2.rsa_free(self.rsa)
+
+        def __getattr__(self, name):
+            if name == 'e':
+                if not self.rsa:
+                    return 0
+                return mpiToNumber(m2.rsa_get_e(self.rsa))
+            elif name == 'n':
+                if not self.rsa:
+                    return 0
+                return mpiToNumber(m2.rsa_get_n(self.rsa))
+            else:
+                raise AttributeError
+
+        def hasPrivateKey(self):
+            return self._hasPrivateKey
+
+        def hash(self):
+            return Python_RSAKey(self.n, self.e).hash()
+
+        def _rawPrivateKeyOp(self, m):
+            s = numberToString(m)
+            byteLength = numBytes(self.n)
+            if len(s)== byteLength:
+                pass
+            elif len(s) == byteLength-1:
+                s = '\0' + s
+            else:
+                raise AssertionError()
+            c = stringToNumber(m2.rsa_private_encrypt(self.rsa, s,
+                                                      m2.no_padding))
+            return c
+
+        def _rawPublicKeyOp(self, c):
+            s = numberToString(c)
+            byteLength = numBytes(self.n)
+            if len(s)== byteLength:
+                pass
+            elif len(s) == byteLength-1:
+                s = '\0' + s
+            else:
+                raise AssertionError()
+            m = stringToNumber(m2.rsa_public_decrypt(self.rsa, s,
+                                                     m2.no_padding))
+            return m
+
+        def acceptsPassword(self): return True
+
+        def write(self, password=None):
+            bio = m2.bio_new(m2.bio_s_mem())
+            if self._hasPrivateKey:
+                if password:
+                    def f(v): return password
+                    m2.rsa_write_key(self.rsa, bio, m2.des_ede_cbc(), f)
+                else:
+                    def f(): pass
+                    m2.rsa_write_key_no_cipher(self.rsa, bio, f)
+            else:
+                if password:
+                    raise AssertionError()
+                m2.rsa_write_pub_key(self.rsa, bio)
+            s = m2.bio_read(bio, m2.bio_ctrl_pending(bio))
+            m2.bio_free(bio)
+            return s
+
+        def writeXMLPublicKey(self, indent=''):
+            return Python_RSAKey(self.n, self.e).write(indent)
+
+        def generate(bits):
+            key = OpenSSL_RSAKey()
+            def f():pass
+            key.rsa = m2.rsa_generate_key(bits, 3, f)
+            key._hasPrivateKey = True
+            return key
+        generate = staticmethod(generate)
+
+        def parse(s, passwordCallback=None):
+            if s.startswith("-----BEGIN "):
+                if passwordCallback==None:
+                    callback = password_callback
+                else:
+                    def f(v, prompt1=None, prompt2=None):
+                        return passwordCallback()
+                    callback = f
+                bio = m2.bio_new(m2.bio_s_mem())
+                try:
+                    m2.bio_write(bio, s)
+                    key = OpenSSL_RSAKey()
+                    if s.startswith("-----BEGIN RSA PRIVATE KEY-----"):
+                        def f():pass
+                        key.rsa = m2.rsa_read_key(bio, callback)
+                        if key.rsa == None:
+                            raise SyntaxError()
+                        key._hasPrivateKey = True
+                    elif s.startswith("-----BEGIN PUBLIC KEY-----"):
+                        key.rsa = m2.rsa_read_pub_key(bio)
+                        if key.rsa == None:
+                            raise SyntaxError()
+                        key._hasPrivateKey = False
+                    else:
+                        raise SyntaxError()
+                    return key
+                finally:
+                    m2.bio_free(bio)
+            else:
+                raise SyntaxError()
+
+        parse = staticmethod(parse)