added libtomcrypt-0.97

Author: Tom St Denis

cast5.c

@@ -418,7 +418,7 @@ int cast5_setup(const unsigned char *key, int keylen, int num_rounds, symmetric_
 
    /* extend the key as required */
    zeromem(buf, sizeof(buf));
-   memcpy(buf, key, (size_t)keylen);
+   XMEMCPY(buf, key, (size_t)keylen);
 
    /* load and start the awful looking network */
    for (y = 0; y < 4; y++) {

cbc_getiv.c

@@ -21,7 +21,7 @@ int cbc_getiv(unsigned char *IV, unsigned long *len, symmetric_CBC *cbc)
    if ((unsigned long)cbc->blocklen > *len) {
       return CRYPT_BUFFER_OVERFLOW;
    }
-   memcpy(IV, cbc->IV, cbc->blocklen);
+   XMEMCPY(IV, cbc->IV, cbc->blocklen);
    *len = cbc->blocklen;
 
    return CRYPT_OK;

cbc_setiv.c

@@ -20,7 +20,7 @@ int cbc_setiv(const unsigned char *IV, unsigned long len, symmetric_CBC *cbc)
    if (len != (unsigned long)cbc->blocklen) {
       return CRYPT_INVALID_ARG;
    }
-   memcpy(cbc->IV, IV, len);
+   XMEMCPY(cbc->IV, IV, len);
    return CRYPT_OK;
 }
 

cfb_getiv.c

@@ -21,7 +21,7 @@ int cfb_getiv(unsigned char *IV, unsigned long *len, symmetric_CFB *cfb)
    if ((unsigned long)cfb->blocklen > *len) {
       return CRYPT_BUFFER_OVERFLOW;
    }
-   memcpy(IV, cfb->IV, cfb->blocklen);
+   XMEMCPY(IV, cfb->IV, cfb->blocklen);
    *len = cfb->blocklen;
 
    return CRYPT_OK;

changes

@@ -1,3 +1,23 @@
+June 19th, 2004
+v0.97  -- Removed spurious unused files [arrg!]
+       -- Patched buffer overflow in tim_exptmod()
+       -- Fixed buffer overrun bug in pkcs_1_v15_es_decode()
+       -- Reduced stack usage in PKCS #1 v2.0 padding functions (by several KBs)
+       -- Removed useless extern's that were an artifact from the project start... ;-)
+       -- Replaced memcpy/memset with XMEMCPY and XMEMSET for greater flexibility
+       -- fixed bugs in hmac_done()/hmac_init()/[various others()] where I didn't trap errors 
+       -- Reduced stack usage in OMAC/PMAC/HMAC/EAX/OCB/PKCS#5 by mallocing any significant sized
+          arrays (e.g. > 100 bytes or so).  Only in non-critical functions (e.g. eax_init())
+       -- "Zhi Chen" <zhi@massiveincorporated.com> pointed out that rsa_decrypt_key() requires
+          an incorrect output size (too large).  Fixed.
+       -- Added a "pretty" target to the GCC makefile.  Requires PERL.  It is NEAT!
+       -- Minor updates to ch1 of the manual.
+       -- Cleaned up the indentation and added comments to rsa_make_key(), rsa_exptmod() and 
+          rsa_verify_hash()
+       -- Updated makefile.icc so the "install" target would work ;-)
+       -- Removed demos/test.c [deprecated from demos/test/test.c]
+       -- Changed MAXBLOCKSIZE from 128 to 64 to reflect the true size...
+
 May 30th, 2004
 v0.96  -- Removed GF and Keyring code
        -- Extended OAEP decoder to distinguish better [and use a more uniform API]

crypt

@@ -0,0 +1,25 @@
+%PDF-1.3
+%�쏢
+3 0 obj
+<< /Type /Pages /Kids [
+] /Count 0
+>>
+endobj
+1 0 obj
+<</Type /Catalog /Pages 3 0 R
+>>
+endobj
+2 0 obj
+<</Producer(ESP Ghostscript 7.07)>>endobj
+xref
+0 4
+0000000000 65535 f 
+0000000068 00000 n 
+0000000116 00000 n 
+0000000015 00000 n 
+trailer
+<< /Size 4 /Root 1 0 R /Info 2 0 R
+>>
+startxref
+166
+%%EOF

crypt.tex

@@ -1,4 +1,4 @@
-\documentclass[b5paper]{book}
+\documentclass[a4paper]{book}
 \usepackage{hyperref}
 \usepackage{makeidx}
 \usepackage{amssymb}
@@ -47,20 +47,15 @@
 \def\gap{\vspace{0.5ex}}
 \makeindex
 \begin{document}
-\title{A Tiny Crypto Library, \\ LibTomCrypt \\ Version 0.96}
+\title{LibTomCrypt \\ Version 0.97}
 \author{Tom St Denis \\
 \\
 tomstdenis@iahu.ca \\
-http://libtomcrypt.org \\ \\
-Phone: 1-613-836-3160\\
-111 Banning Rd \\
-Kanata, Ontario \\
-K2L 1C3 \\
-Canada
+http://libtomcrypt.org
 }
 \maketitle
 This text and source code library are both hereby placed in the public domain.  This book has been 
-formatted for B5 [176x250] paper using the \LaTeX{} {\em book} macro package.
+formatted for A4 paper using the \LaTeX{} {\em book} macro package.
 
 \vspace{10cm}
 
@@ -70,7 +65,15 @@
 
 Tom St Denis,
 
-Ontario, Canada
+Phone: 1-613-836-3160
+
+111 Banning Rd 
+
+Kanata, Ontario 
+
+K2L 1C3 
+
+Canada
 \end{flushright}
 \newpage
 \tableofcontents
@@ -182,15 +185,15 @@ \section{License}
 library.
 
 ``rc2.c'' is based on publicly available code that is not attributed to a person from the given source.  ``safer.c''
-was written by Richard De Moliner (demoliner@isi.ee.ethz.ch) and is public domain.
+was written by Richard De Moliner (demoliner@isi.ee.ethz.ch) and seems to be free for use.
 
 The project is hereby released as public domain.
 
 \section{Patent Disclosure}
 
 The author (Tom St Denis) is not a patent lawyer so this section is not to be treated as legal advice.  To the best
 of the authors knowledge the only patent related issues within the library are the RC5 and RC6 symmetric block ciphers.  
-They can be removed from a build by simply commenting out the two appropriate lines in the makefile script.  The rest
+They can be removed from a build by simply commenting out the two appropriate lines in ``mycrypt\_custom.h''.  The rest
 of the ciphers and hashes are patent free or under patents that have since expired.
 
 The RC2 and RC4 symmetric ciphers are not under patents but are under trademark regulations.  This means you can use 
@@ -212,11 +215,11 @@ \section{Building against the library}
 
 In the recent versions the build steps have changed.  The build options are now stored in ``mycrypt\_custom.h'' and
 no longer in the makefile.  If you change a build option in that file you must re-build the library from clean to
-ensure the build is intact.  The perl script ``config.pl'' will help setup the custom header and a custom makefile
-if you want one (the provided ``makefile'' will work with custom configs).
+ensure the build is intact.  
 
 \section{Thanks}
-I would like to give thanks to the following people (in no particular order) for helping me develop this project:
+I would like to give thanks to the following people (in no particular order) for helping me develop this project from
+early on:
 \begin{enumerate}
    \item Richard van de Laarschot
    \item Richard Heathfield
@@ -233,6 +236,10 @@ \section{Thanks}
    \item Christopher Imes
 \end{enumerate}
 
+There have been quite a few other people as well.  Please check the change log to see who else has contributed from
+time to time.
+
+
 \chapter{The Application Programming Interface (API)}
 \section{Introduction}
 \index{CRYPT\_ERROR} \index{CRYPT\_OK}
@@ -581,9 +588,9 @@ \subsection{Notes}
 \begin{tabular}{|l|l|l|}
 \hline TWOFISH\_SMALL & TWOFISH\_TABLES & Speed and Memory (per key) \\
 \hline undefined & undefined & Very fast, 4.2KB of ram. \\
-\hline undefined & defined & As above, faster keysetup, larger code (1KB more). \\
+\hline undefined & defined & Faster keysetup, larger code. \\
 \hline defined & undefined & Very slow, 0.2KB of ram. \\
-\hline defined & defined & Somewhat faster, 0.2KB of ram, larger code. \\
+\hline defined & defined & Faster, 0.2KB of ram, larger code. \\
 \hline
 \end{tabular}
 \end{center}
@@ -615,7 +622,8 @@ \subsection{Notes}
    }
 
    /* generic call to function (assuming the key in key[] was already setup) */
-   if ((err = cipher_descriptor[find_cipher("blowfish")].setup(key, 8, 0, &skey)) != CRYPT_OK) {
+   if ((err = cipher_descriptor[find_cipher("blowfish")].setup(key, 8, 0, &skey)) != 
+       CRYPT_OK) {
       printf("Error setting up Blowfish: %s\n", error_to_string(err));
       return -1;
    }
@@ -820,12 +828,13 @@ \subsection{Implementation}
    /* somehow fill out key and IV */
 
    /* start up CTR mode */
-   if ((err = ctr_start(find_cipher("twofish"), /* index of desired cipher */
-                                            IV, /* the initial vector */
-                                           key, /* the secret key */
-                                            16, /* length of secret key (16 bytes, 128 bits) */
-                                             0, /* 0 == default # of rounds */
-                                         &ctr)  /* where to store initialized CTR state */
+   if ((err = ctr_start(
+        find_cipher("twofish"), /* index of desired cipher */
+                            IV, /* the initial vector */
+                           key, /* the secret key */
+                            16, /* length of secret key (16 bytes, 128 bits) */
+                             0, /* 0 == default # of rounds */
+                         &ctr)  /* where to store initialized CTR state */
       ) != CRYPT_OK) {
       printf("ctr_start error: %s\n", error_to_string(err));
       return -1;

crypt_register_cipher.c

@@ -26,7 +26,7 @@ int register_cipher(const struct _cipher_descriptor *cipher)
    /* find a blank spot */
    for (x = 0; x < TAB_SIZE; x++) {
        if (cipher_descriptor[x].name == NULL) {
-          memcpy(&cipher_descriptor[x], cipher, sizeof(struct _cipher_descriptor));
+          XMEMCPY(&cipher_descriptor[x], cipher, sizeof(struct _cipher_descriptor));
           return x;
        }
    }

crypt_register_hash.c

@@ -26,7 +26,7 @@ int register_hash(const struct _hash_descriptor *hash)
    /* find a blank spot */
    for (x = 0; x < TAB_SIZE; x++) {
        if (hash_descriptor[x].name == NULL) {
-          memcpy(&hash_descriptor[x], hash, sizeof(struct _hash_descriptor));
+          XMEMCPY(&hash_descriptor[x], hash, sizeof(struct _hash_descriptor));
           return x;
        }
    }

crypt_register_prng.c

@@ -26,7 +26,7 @@ int register_prng(const struct _prng_descriptor *prng)
    /* find a blank spot */
    for (x = 0; x < TAB_SIZE; x++) {
        if (prng_descriptor[x].name == NULL) {
-          memcpy(&prng_descriptor[x], prng, sizeof(struct _prng_descriptor));
+          XMEMCPY(&prng_descriptor[x], prng, sizeof(struct _prng_descriptor));
           return x;
        }
    }