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#include "EXTERN.h" |
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#include "perl.h" |
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#include "XSUB.h" |
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|
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/* try to be compatible with older perls */ |
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/* SvPV_nolen() macro first defined in 5.005_55 */ |
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/* this is slow, not threadsafe, but works */ |
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#include "patchlevel.h" |
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#if (PATCHLEVEL == 4) || ((PATCHLEVEL == 5) && (SUBVERSION < 55)) |
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static STRLEN nolen_na; |
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# define SvPV_nolen(sv) SvPV ((sv), nolen_na) |
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#endif |
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|
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#include "aes.h" |
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#include "twofish.c" |
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|
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typedef struct cryptstate { |
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keyInstance ki; |
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cipherInstance ci; |
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} *Crypt__Twofish2; |
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|
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MODULE = Crypt::Twofish2 PACKAGE = Crypt::Twofish2 |
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|
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PROTOTYPES: ENABLE |
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|
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BOOT: |
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{ |
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HV *stash = gv_stashpv ("Crypt::Twofish2", 0); |
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|
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newCONSTSUB (stash, "keysize", newSViv (32)); |
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newCONSTSUB (stash, "blocksize", newSViv (16)); |
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newCONSTSUB (stash, "MODE_ECB", newSViv (MODE_ECB)); |
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newCONSTSUB (stash, "MODE_CBC", newSViv (MODE_CBC)); |
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newCONSTSUB (stash, "MODE_CFB1", newSViv (MODE_CFB1)); |
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} |
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|
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Crypt::Twofish2 |
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new(class, key, mode=MODE_ECB) |
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SV * class |
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SV * key |
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int mode |
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CODE: |
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{ |
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STRLEN keysize; |
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|
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if (!SvPOK (key)) |
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croak ("key must be a string scalar"); |
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|
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keysize = SvCUR(key); |
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|
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if (keysize != 16 && keysize != 24 && keysize != 32) |
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croak ("wrong key length: key must be 128, 192 or 256 bits long"); |
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if (mode != MODE_ECB && mode != MODE_CBC && mode != MODE_CFB1) |
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croak ("illegal mode: mode must be MODE_ECB, MODE_2 or MODE_CFB1"); |
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|
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Newz (0, RETVAL, 1, struct cryptstate); /* Newz required for defined IV */ |
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|
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if (makeKey (&RETVAL->ki, DIR_ENCRYPT, keysize*8, SvPV_nolen(key)) != TRUE) |
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croak ("Crypt::Twofish2: makeKey failed, please report!"); |
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if (cipherInit (&RETVAL->ci, mode, 0) != TRUE) /* no IV supported (yet) */ |
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croak ("Crypt::Twofish2: makeKey failed, please report!"); |
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} |
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OUTPUT: |
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RETVAL |
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|
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SV * |
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encrypt(self, data) |
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Crypt::Twofish2 self |
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SV * data |
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ALIAS: |
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decrypt = 1 |
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CODE: |
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{ |
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SV *res; |
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STRLEN size; |
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void *rawbytes = SvPV(data,size); |
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|
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if (size) |
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{ |
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if (size % (BLOCK_SIZE >> 3)) |
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croak ("encrypt: datasize not multiple of blocksize (%d bits)", BLOCK_SIZE); |
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|
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RETVAL = NEWSV (0, size); |
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SvPOK_only (RETVAL); |
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(SvPVX (RETVAL))[size] = 0; |
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SvCUR_set (RETVAL, size); |
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|
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if ((ix ? blockDecrypt : blockEncrypt) |
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(&self->ci, &self->ki, rawbytes, size << 3, (void *)SvPV_nolen(RETVAL)) < 0) |
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croak ("block(De|En)crypt: unknown error, please report"); |
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} |
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else |
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RETVAL = newSVpv ("", 0); |
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} |
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OUTPUT: |
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RETVAL |
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|
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void |
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DESTROY(self) |
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Crypt::Twofish2 self |
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CODE: |
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Safefree(self); |
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|
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|
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|
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