void-packages/srcpkgs/libtomcrypt/patches/libtomcrypt_1.17-2.diff

113 lines
3.7 KiB
Diff

--- libtomcrypt-1.17.orig/libtomcrypt.pc
+++ libtomcrypt-1.17/libtomcrypt.pc
@@ -0,0 +1,10 @@
+prefix=/usr
+exec_prefix=${prefix}
+libdir=${exec_prefix}/lib
+includedir=${prefix}/include
+
+Name: LibTomCrypt
+Description: public domain open source cryptographic toolkit
+Version: 1.17
+Libs: -L${libdir} -ltomcrypt
+Cflags: -I${includedir}
--- libtomcrypt-1.17.orig/libtomcrypt.3
+++ libtomcrypt-1.17/libtomcrypt.3
@@ -0,0 +1,96 @@
+.\" Hey, EMACS: -*- nroff -*-
+.\" First parameter, NAME, should be all caps
+.\" Second parameter, SECTION, should be 1-8, maybe w/ subsection
+.\" other parameters are allowed: see man(7), man(1)
+.TH LIBTOMCRYPT 3 "June 2009"
+.\" Please adjust this date whenever revising the manpage.
+.\"
+.\" Some roff macros, for reference:
+.\" .nh disable hyphenation
+.\" .hy enable hyphenation
+.\" .ad l left justify
+.\" .ad b justify to both left and right margins
+.\" .nf disable filling
+.\" .fi enable filling
+.\" .br insert line break
+.\" .sp <n> insert n+1 empty lines
+.\" for manpage-specific macros, see man(7)
+.SH NAME
+libtomcrypt \- public domain open source crypthographic toolkit
+.SH SYNOPSIS
+#include <tomcrypt.h>
+
+Link with \-ltomcrypt (use pkg-config --libs libtomcrypt)
+
+.SH DESCRIPTION
+.B libtomcrypt
+is documented in /usr/share/doc/libtomcrypt-dev/crypt.pdf. To give you a very
+brief introduction, the following example is provided.
+
+.SH EXAMPLE
+.nf
+ /* AES-XTS example for libtomcrypt. (c) 2008 Michael Stapelberg, Public Domain */
+ #include <stdint.h>
+ #include <string.h>
+ #include <tomcrypt.h>
+
+ static symmetric_xts xts;
+
+ /*
+ * Initializes AES-XTS for use with encrypt(). Key must be at least 32 bytes long, only
+ * the first 32 bytes will be used.
+ *
+ */
+ void initialize_xts(unsigned char *key) {
+ int idx, err;
+ unsigned char aeskey1[16], aeskey2[16];
+
+ /* You can use 32 different ciphers simultaneously. Before using a cipher, you must register it. */
+ register_cipher(&aes_desc);
+
+ /* Get the index of the cipher registered before */
+ if ((idx = find_cipher("aes")) == \-1) {
+ fprintf(stderr, "ERROR: AES not available in libtomcrypt. Please upgrade/fix libtomcrypt.\\n");
+ exit(EXIT_FAILURE);
+ }
+
+ /* Set up the two private keys required by AES-XTS (see 3.4.10 of crypt.pdf) */
+ strncpy((char*)aeskey1, key, 16);
+ strncpy((char*)aeskey2, key+16, 16);
+
+ printf("Initializing with keys \\"%.16s\\" and \\"%.16s\\" (AES-XTS)\\n", aeskey1, aeskey2);
+
+ /* Initialize AES-XTS */
+ if ((err = xts_start(idx, aeskey1, aeskey2, 16, 0, &xts)) != CRYPT_OK) {
+ fprintf(stderr, "ERROR starting XTS: %s\\n", error_to_string(err));
+ exit(EXIT_FAILURE);
+ }
+ }
+
+ /*
+ * Encrypts the input (of input_size) and stores the result in output. The piece index
+ * is required because XTS wants a tweak for each block so that it doesn't generate
+ * patterns which would be visible in the encrypted output.
+ *
+ */
+ void encrypt(const uint8_t *input, uint8_t *output, int input_size, int piece_idx) {
+ unsigned char tweak[256];
+ int err;
+
+ memset(tweak, '\\0', 256);
+ snprintf((char*)tweak, 256, "%d", piece_idx);
+
+ if ((err = xts_encrypt(input, input_size, output, tweak, &xts)) != CRYPT_OK) {
+ fprintf(stderr, "ERROR in AES encryption: %d: %s\\n", err, error_to_string(err));
+ exit(EXIT_FAILURE);
+ }
+ }
+.fi
+
+.SH SEE ALSO
+.BR pkg-config (1)
+.SH AUTHOR
+libtomcrypt was written by Tom St Denis.
+.PP
+This manual page was written by Michael Stapelberg <michael@stapelberg.de>,
+for the Debian project (and may be used by others).