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//usr/lib/python2.4/site-packages/M2Crypto/DSA.pyc
mò Ô'rDc @ sì d Z d k Z d k Z d k Z d k Z d e f d „ ƒ YZ e i e ƒ d f d „ ƒ YZ d e f d „ ƒ YZ e i d „ Z d „ Z e i d „ Z e i d „ Z e i d „ Z e i d „ Z e i d „ Z e i d „ Z d S( sç M2Crypto wrapper for OpenSSL DSA API. Copyright (c) 1999-2003 Ng Pheng Siong. All rights reserved. Portions created by Open Source Applications Foundation (OSAF) are Copyright (C) 2004 OSAF. All Rights Reserved. Nt DSAErrorc B s t Z RS( N( t __name__t __module__( ( ( t0 /usr/lib/python2.4/site-packages/M2Crypto/DSA.pyR s t DSAc B sÎ t Z d Z e i Z d d „ Z d „ Z d „ Z d „ Z d „ Z d „ Z d „ Z d „ Z d „ Z d e i d „ Z d e i d „ Z d „ Z d „ Z d „ Z d „ Z d „ Z d „ Z d „ Z RS( s@ This class is a context supporting DSA key and parameter values, signing and verifying. Simple example: from M2Crypto import EVP, DSA, util message = 'Kilroy was here!' md = EVP.MessageDigest('sha1') md.update(message) digest = md.final() dsa = DSA.gen_params(1024) dsa.gen_key() r, s = dsa.sign(digest) good = dsa.verify(digest, r, s) if good: print ' ** success **' else: print ' ** verification failed **' i c C s0 t i | ƒ p t d ‚ | | _ | | _ d S( sI Use one of the factory functions to create an instance. s 'dsa' type errorN( t m2t dsa_type_checkt dsat AssertionErrort selft _pyfree( R R R ( ( R t __init__, s c C s+ t | d d ƒ o | i | i ƒ n d S( NR i ( t getattrR t m2_dsa_freeR ( R ( ( R t __del__4 s c C s- t i | i ƒ p t d ‚ t i | i ƒ S( sp Return the key length. @rtype: int @return: the DSA key length in bits s 'dsa' type errorN( R R R R R t dsa_keylen( R ( ( R t __len__8 s c C sj | d d d d d g j oD t t d | f ƒ } t i | i ƒ p t d ‚ | | i ƒ Sn t ‚ d S( s5 Return specified DSA parameters and key values. @type name: str @param name: name of variable to be returned. Must be one of 'p', 'q', 'g', 'pub', 'priv'. @rtype: str @return: value of specified variable (a "byte string") t pt qt gt pubt privs dsa_get_%ss 'dsa' type errorN( t nameR R t methodR R R R t AttributeError( R R R ( ( R t __getattr__B s c C sZ | d d d g j o t d ƒ ‚ n1 | d d g j o t d ƒ ‚ n | | i | <d S( NR R R s set (p, q, g) via set_params()R R s" generate (pub, priv) via gen_key()( R R t valueR t __dict__( R R R ( ( R t __setattr__S s c C s= t i | i | ƒ t i | i | ƒ t i | i | ƒ d S( sö Set new parameters. @warning: This does not change the private key, so it may be unsafe to use this method. It is better to use gen_params function to create a new DSA object. N( R t dsa_set_pR R R t dsa_set_qR t dsa_set_gR ( R R R R ( ( R t set_params[ s c C s1 t i | i ƒ p t d ‚ t i | i ƒ d S( s& Generate a key pair. s 'dsa' type errorN( R R R R R t dsa_gen_key( R ( ( R t gen_keyg s c C s; t i | d ƒ } t i | i | i ƒ ƒ } | i ƒ | S( sÅ Save the DSA parameters to a file. @type filename: str @param filename: Save the DSA parameters to this file. @return: 1 (true) if successful t wbN( t BIOt openfilet filenamet bioR t dsa_write_params_bioR R t _ptrt rett close( R R& R' R* ( ( R t save_paramsn s c C s t i | i | i ƒ ƒ S( sÆ Save DSA parameters to a BIO object. @type bio: M2Crypto.BIO object @param bio: Save DSA parameters to this object. @return: 1 (true) if successful N( R R( R R R' R) ( R R' ( ( R t save_params_bio{ s t aes_128_cbcc C s5 t i t d ƒ } | i | | | ƒ } | i ƒ | S( sU Save the DSA key pair to a file. @type filename: str @param filename: Save the DSA key pair to this file. @type cipher: str @param cipher: name of symmetric key algorithm and mode to encrypt the private key. @return: 1 (true) if successful R# N( R$ R% t filepathR' R t save_key_biot ciphert callbackR* R+ ( R R& R1 R2 R' R* ( ( R t save_key… s c C sŒ | d j o t i | i | i ƒ | ƒ Sn\ t t | d ƒ } | d j o t d | ƒ ‚ n | ƒ } t i | i | i ƒ | | ƒ Sd S( s[ Save DSA key pair to a BIO object. @type bio: M2Crypto.BIO object @param bio: Save DSA parameters to this object. @type cipher: str @param cipher: name of symmetric key algorithm and mode to encrypt the private key. @return: 1 (true) if successful s no such cipher: %sN( R1 t NoneR t dsa_write_key_bio_no_cipherR R R' R) R2 R t ciphR t dsa_write_key_bio( R R' R1 R2 R6 ( ( R R0 – s c C s/ t i t d ƒ } | i | ƒ } | i ƒ | S( sÿ Save the DSA public key (with parameters) to a file. @type filename: str @param filename: Save DSA public key (with parameters) to this file. @return: 1 (true) if successful R# N( R$ R% R/ R' R t save_pub_key_bioR* R+ ( R R& R' R* ( ( R t save_pub_key s c C s t i | i | i ƒ ƒ S( sý Save DSA public key (with parameters) to a BIO object. @type bio: M2Crypto.BIO object @param bio: Save DSA public key (with parameters) to this object. @return: 1 (true) if successful N( R t dsa_write_pub_key_bioR R R' R) ( R R' ( ( R R8 » s c C s* | i ƒ p t d ‚ t i | i | ƒ S( sK Sign the digest. @type digest: str @param digest: SHA-1 hash of message (same as output from MessageDigest, a "byte string") @rtype: tuple @return: DSA signature, a tuple of two values, r and s, both "byte strings". s key is not initialisedN( R t check_keyR R t dsa_signR t digest( R R= ( ( R t signÆ s c C s0 | i ƒ p t d ‚ t i | i | | | ƒ S( s Verify a newly calculated digest against the signature values r and s. @type digest: str @param digest: SHA-1 hash of message (same as output from MessageDigest, a "byte string") @type r: str @param r: r value of the signature, a "byte string" @type s: str @param s: s value of the signature, a "byte string" @rtype: int @return: 1 (true) if verify succeeded, 0 if failed s key is not initialisedN( R R; R R t dsa_verifyR R= t rt s( R R= R@ RA ( ( R t verifyÔ s c C s* | i ƒ p t d ‚ t i | i | ƒ S( Ns key is not initialised( R R; R R t dsa_sign_asn1R R= ( R R= ( ( R t sign_asn1æ s c C s- | i ƒ p t d ‚ t i | i | | ƒ S( Ns key is not initialised( R R; R R t dsa_verify_asn1R R= t blob( R R= RF ( ( R t verify_asn1ê s c C s- t i | i ƒ p t d ‚ t i | i ƒ S( s— Check to be sure the DSA object has a valid private key. @rtype: int @return: 1 (true) if a valid private key s 'dsa' type errorN( R R R R R t dsa_check_key( R ( ( R R; î s ( R R t __doc__R t dsa_freeR R R R R R R R" R, R- t utilt passphrase_callbackR3 R0 R9 R8 R> RB RD RG R; ( ( ( R R s( t DSA_pubc B s8 t Z d Z d „ Z e Z d „ Z e i Z e i Z RS( s• This class is a DSA context that only supports a public key and verification. It does NOT support a private key or signing. c G s t d ƒ ‚ d S( Ns! DSA_pub object has no private key( R ( R t argv( ( R R> s c C s t i | i ƒ S( N( R t dsa_check_pub_keyR R ( R ( ( R R; s ( R R RI R> RD R; R R9 R3 R8 R0 ( ( ( R RM ú s c C s< t i | | ƒ } | d j o t d ƒ ‚ n t | d ƒ S( sô Factory function that generates DSA parameters and instantiates a DSA object from the output. @type bits: int @param bits: The length of the prime to be generated. If 'bits' < 512, it is set to 512. @type callback: function @param callback: A Python callback object that will be invoked during parameter generation; it usual purpose is to provide visual feedback. @rtype: DSA @return: instance of DSA. s! problem generating DSA parametersi N( R t dsa_generate_parameterst bitsR2 R R4 R R ( RQ R2 R ( ( R t gen_params s c C sI t i ƒ } t i | | ƒ t i | | ƒ t i | | ƒ t | d ƒ S( s8 Factory function that instantiates a DSA object with DSA parameters. @type p: str @param p: value of p, a "byte string" @type q: str @param q: value of q, a "byte string" @type g: str @param g: value of g, a "byte string" @rtype: DSA @return: instance of DSA. i N( R t dsa_newR R R R R R R R ( R R R R ( ( R R & s c C s, t i | ƒ } t | | ƒ } | i ƒ | S( s Factory function that instantiates a DSA object with DSA parameters from a file. @type file: str @param file: Names the file (a path) that contains the PEM representation of the DSA parameters. @type callback: A Python callable @param callback: A Python callback object that will be invoked if the DSA parameters file is passphrase-protected. @rtype: DSA @return: instance of DSA. N( R$ R% t fileR' t load_params_bioR2 R* R+ ( RT R2 R' R* ( ( R t load_params: s c C sB t i | i ƒ | ƒ } | d j o t d ƒ ‚ n t | d ƒ S( s Factory function that instantiates a DSA object with DSA parameters from a M2Crypto.BIO object. @type bio: M2Crypto.BIO object @param bio: Contains the PEM representation of the DSA parameters. @type callback: A Python callable @param callback: A Python callback object that will be invoked if the DSA parameters file is passphrase-protected. @rtype: DSA @return: instance of DSA. s problem loading DSA parametersi N( R t dsa_read_paramsR' R) R2 R R4 R R ( R' R2 R ( ( R RU O s c C s, t i | ƒ } t | | ƒ } | i ƒ | S( sø Factory function that instantiates a DSA object from a PEM encoded DSA key pair. @type file: str @param file: Names the file (a path) that contains the PEM representation of the DSA key pair. @type callback: A Python callable @param callback: A Python callback object that will be invoked if the DSA key pair is passphrase-protected. @rtype: DSA @return: instance of DSA. N( R$ R% RT R' t load_key_bioR2 R* R+ ( RT R2 R' R* ( ( R t load_keyd s c C s< t i | i ƒ | ƒ } | p t d ƒ ‚ n t | d ƒ S( së Factory function that instantiates a DSA object from a PEM encoded DSA key pair. @type bio: M2Crypto.BIO object @param bio: Contains the PEM representation of the DSA key pair. @type callback: A Python callable @param callback: A Python callback object that will be invoked if the DSA key pair is passphrase-protected. @rtype: DSA @return: instance of DSA. s problem loading DSA key pairi N( R t dsa_read_keyR' R) R2 R R R ( R' R2 R ( ( R RX y s c C s, t i | ƒ } t | | ƒ } | i ƒ | S( sg Factory function that instantiates a DSA_pub object using a DSA public key contained in PEM file. The PEM file must contain the parameters in addition to the public key. @type file: str @param file: Names the file (a path) that contains the PEM representation of the DSA public key. @type callback: A Python callable @param callback: A Python callback object that will be invoked should the DSA public key be passphrase-protected. @rtype: DSA_pub @return: instance of DSA_pub. N( R$ R% RT R' t load_pub_key_bioR2 R* R+ ( RT R2 R' R* ( ( R t load_pub_keyŽ s c C s< t i | i ƒ | ƒ } | p t d ƒ ‚ n t | d ƒ S( se Factory function that instantiates a DSA_pub object using a DSA public key contained in PEM format. The PEM must contain the parameters in addition to the public key. @type bio: M2Crypto.BIO object @param bio: Contains the PEM representation of the DSA public key (with params). @type callback: A Python callable @param callback: A Python callback object that will be invoked should the DSA public key be passphrase-protected. @rtype: DSA_pub @return: instance of DSA_pub. s problem loading DSA public keyi N( R t dsa_read_pub_keyR' R) R2 t dsapubR RM ( R' R2 R^ ( ( R R[ ¤ s ( RI t sysRK R$ R t ExceptionR t dsa_initR RM t genparam_callbackRR R RL RV RU RY RX R\ R[ ( RK RR R$ RY RM R[ R R_ R\ R RV R RX RU R ( ( R t ? s é