From f01619891558c46cc2de0f92174f9f1ad1b15a1a Mon Sep 17 00:00:00 2001
From: Tom Willemse
Date: Sun, 17 Nov 2013 00:42:46 +0100
Subject: Rename sha1.c to dispass.c

This project started out as a test to get SHA1 (actually SHA512)
working, now it's grown up to a DisPass algorithm
implementation (experiment).
---
 sha1.c | 138 -----------------------------------------------------------------
 1 file changed, 138 deletions(-)
 delete mode 100644 sha1.c

(limited to 'sha1.c')

diff --git a/sha1.c b/sha1.c
deleted file mode 100644
index 3024845..0000000
--- a/sha1.c
+++ /dev/null
@@ -1,138 +0,0 @@
-#include <stdio.h>
-#include <string.h>
-#include <openssl/sha.h>
-#include <openssl/pem.h>
-#include <limits.h>
-
-#define MIN(A, B) ((A) < (B) ? (A) : (B))
-#define MAXLEN (SHA512_DIGEST_LENGTH * 2)
-
-char *
-base64encode(const void *data, int len)
-{ /* Copied from http://stackoverflow.com/a/16511093/459915 */
-    BIO *b64_bio, *mem_bio;
-    BUF_MEM *mem_bio_mem_ptr;
-    char *ret;
-
-    b64_bio = BIO_new(BIO_f_base64());
-    mem_bio = BIO_new(BIO_s_mem());
-    BIO_push(b64_bio, mem_bio);
-    BIO_set_flags(b64_bio, BIO_FLAGS_BASE64_NO_NL);
-
-    BIO_write(b64_bio, data, len);
-    BIO_flush(b64_bio);
-
-    BIO_get_mem_ptr(mem_bio, &mem_bio_mem_ptr);
-    BIO_set_close(mem_bio, BIO_NOCLOSE);
-    BIO_free_all(b64_bio);
-
-    (*mem_bio_mem_ptr).data[(*mem_bio_mem_ptr).length] = '\0';
-    ret = calloc((*mem_bio_mem_ptr).length, sizeof(char));
-    strncpy(ret, (*mem_bio_mem_ptr).data, (*mem_bio_mem_ptr).length);
-    BUF_MEM_free(mem_bio_mem_ptr);
-
-    return ret;
-}
-
-void
-sha512_to_string(unsigned char *data, char *buff)
-{
-    int i;
-
-    for (i = 0; i < SHA512_DIGEST_LENGTH; i++) {
-        char sbuff[3] = { '\0' };
-        sprintf(sbuff, "%02x", data[i]);
-        strcat(buff, sbuff);
-    }
-}
-
-void
-rmchar(char rm, char **s)
-{
-    int i, j = 0;
-    char *new;
-    size_t len;
-
-    if (!strchr(*s, rm))
-        return;
-
-    len = strlen(*s);
-    new = calloc(len + 1, sizeof(char));
-
-    for (i = 0; i < len; i++) {
-        char c;
-
-        if ((c = (*s)[i]) != rm)
-            new[j++] = c;
-    }
-
-    strncpy(*s, new, len);
-    free(new);
-}
-
-char *
-dispass1(char *label, char *password, int len, long long unsigned seqno)
-{
-    unsigned char *d;
-    size_t tbufflen = strlen(label) + strlen(password) + 1;
-    char *tbuff = calloc(tbufflen, sizeof(char));
-    char buff[MAXLEN + 1] = { '\0' };
-    char *b64;
-
-    strcat(tbuff, label);
-    strcat(tbuff, password);
-    d = SHA512((unsigned char *)tbuff, strlen(tbuff), 0);
-    free(tbuff);
-    sha512_to_string(d, buff);
-    b64 = base64encode(buff, strlen(buff));
-    b64[MIN(len, MAXLEN)] = '\0';
-    rmchar('=', &b64);
-
-    return b64;
-}
-
-char *
-dispass2(char *label, char *password, int len, long long unsigned seqno)
-{
-    unsigned char *d;
-    char ibuff[300];
-    char *tbuff, *b64;
-    char buff[MAXLEN + 1] = { '\0' };
-
-    sprintf(ibuff, "%llu", seqno);
-    tbuff = calloc(strlen(label) + strlen(ibuff) + strlen(password) + 1,
-                   sizeof(char));
-    strcat(tbuff, label);
-    strcat(tbuff, ibuff);
-    strcat(tbuff, password);
-    d = SHA512((unsigned char *)tbuff, strlen(tbuff), 0);
-    free(tbuff);
-    sha512_to_string(d, buff);
-    b64 = base64encode(buff, strlen(buff));
-    b64[MIN(len, MAXLEN)] = '\0';
-    rmchar('=', &b64);
-
-    return b64;
-}
-
-int main(int argc, char *argv[])
-{
-    char *test1, *test2, *test3, *test4;
-
-    test1 = dispass1("test", "qqqqqqqq", 30, 0);
-    test2 = dispass1("test2", "qqqqqqqq", 50, 0);
-    test3 = dispass2("test", "qqqqqqqq", 30, 1);
-    test4 = dispass2("test2", "qqqqqqqq", 50, 10);
-
-    printf("%s\n", test1);
-    printf("%s\n", test2);
-    printf("%s\n", test3);
-    printf("%s\n", test4);
-
-    free(test1);
-    free(test2);
-    free(test3);
-    free(test4);
-
-    return 0;
-}
-- 
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