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[git] GCRYPT - branch, master, updated. libgcrypt-1.7.3-73-gd1ee9a6

by NIIBE Yutaka
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "The GNU crypto library".

The branch, master has been updated
       via  d1ee9a660571ce4a998c9ab2299d4f2419f99127 (commit)
       via  80bd6195c794a7900791a88b943f371dc480cf07 (commit)
      from  c67c728478e8f47b6e8296b643fd35d66d4a1052 (commit)

Those revisions listed above that are new to this repository have
not appeared on any other notification email; so we list those
revisions in full, below.

- Log -----------------------------------------------------------------
commit d1ee9a660571ce4a998c9ab2299d4f2419f99127
Author: Mathias L. Baumann <mathias.baumann_at_sociomantic.com>
Date:   Sat Feb 4 13:30:41 2017 +0200

    Implement CFB with 8-bit mode
   
    * cipher/cipher-cfb.c (_gcry_cipher_cfb8_encrypt)
    (_gcry_cipher_cfg8_decrypt): Add 8-bit variants of decrypt/encrypt
    functions.
    * cipher/cipher-internal.h (_gcry_cipher_cfb8_encrypt)
    (_gcry_cipher_cfg8_decrypt): Ditto.
    * cipher/cipher.c: Adjust code flow to work with GCRY_CIPHER_MODE_CFB8.
    * tests/basic.c: Add tests for cfb8 with AES and 3DES.
    --
   
    Signed-off-by: Mathias L. Baumann <mathias.baumann at sociomantic.com>
    [JK: edit changelog, fix email malformed patch]
    Signed-off-by: Jussi Kivilinna <[hidden email]>

diff --git a/cipher/cipher-cfb.c b/cipher/cipher-cfb.c
index 21c81ca..cca5c1f 100644
--- a/cipher/cipher-cfb.c
+++ b/cipher/cipher-cfb.c
@@ -233,3 +233,89 @@ _gcry_cipher_cfb_decrypt (gcry_cipher_hd_t c,
 
   return 0;
 }
+
+
+gcry_err_code_t
+_gcry_cipher_cfb8_encrypt (gcry_cipher_hd_t c,
+                          unsigned char *outbuf, size_t outbuflen,
+                          const unsigned char *inbuf, size_t inbuflen)
+{
+  gcry_cipher_encrypt_t enc_fn = c->spec->encrypt;
+  size_t blocksize = c->spec->blocksize;
+  unsigned int burn, nburn;
+
+  if (outbuflen < inbuflen)
+    return GPG_ERR_BUFFER_TOO_SHORT;
+
+  burn = 0;
+
+  while ( inbuflen > 0)
+    {
+      /* Encrypt the IV. */
+      nburn = enc_fn ( &c->context.c, c->lastiv, c->u_iv.iv );
+      burn = nburn > burn ? nburn : burn;
+
+      outbuf[0] = c->lastiv[0] ^ inbuf[0];
+
+      /* Bitshift iv by 8 bit to the left */
+      for (int i = 0; i < blocksize-1; i++)
+        c->u_iv.iv[i] = c->u_iv.iv[i+1];
+
+      /* append cipher text to iv */
+      c->u_iv.iv[blocksize-1] = outbuf[0];
+
+      outbuf += 1;
+      inbuf += 1;
+      inbuflen -= 1;
+    }
+
+  if (burn > 0)
+    _gcry_burn_stack (burn + 4 * sizeof(void *));
+
+  return 0;
+}
+
+
+gcry_err_code_t
+_gcry_cipher_cfb8_decrypt (gcry_cipher_hd_t c,
+                          unsigned char *outbuf, size_t outbuflen,
+                          const unsigned char *inbuf, size_t inbuflen)
+{
+  gcry_cipher_encrypt_t enc_fn = c->spec->encrypt;
+  size_t blocksize = c->spec->blocksize;
+  unsigned int burn, nburn;
+  unsigned char appendee;
+
+  if (outbuflen < inbuflen)
+    return GPG_ERR_BUFFER_TOO_SHORT;
+
+  burn = 0;
+
+  while (inbuflen > 0)
+    {
+      /* Encrypt the IV. */
+      nburn = enc_fn ( &c->context.c, c->lastiv, c->u_iv.iv );
+      burn = nburn > burn ? nburn : burn;
+
+      /* inbuf might == outbuf, make sure we keep the value
+         so we can append it later */
+      appendee = inbuf[0];
+
+      outbuf[0] = inbuf[0] ^ c->lastiv[0];
+
+      /* Bitshift iv by 8 bit to the left */
+      for (int i = 0; i < blocksize-1; i++)
+        c->u_iv.iv[i] = c->u_iv.iv[i+1];
+
+      c->u_iv.iv[blocksize-1] = appendee;
+
+      outbuf += 1;
+      inbuf += 1;
+      inbuflen -= 1;
+    }
+
+  if (burn > 0)
+    _gcry_burn_stack (burn + 4 * sizeof(void *));
+
+  return 0;
+}
diff --git a/cipher/cipher-internal.h b/cipher/cipher-internal.h
index 33d0629..ea9c33d 100644
--- a/cipher/cipher-internal.h
+++ b/cipher/cipher-internal.h
@@ -348,6 +348,14 @@ gcry_err_code_t _gcry_cipher_cfb_decrypt
 /*           */ (gcry_cipher_hd_t c,
                  unsigned char *outbuf, size_t outbuflen,
                  const unsigned char *inbuf, size_t inbuflen);
+gcry_err_code_t _gcry_cipher_cfb8_encrypt
+/*           */ (gcry_cipher_hd_t c,
+                 unsigned char *outbuf, size_t outbuflen,
+                 const unsigned char *inbuf, size_t inbuflen);
+gcry_err_code_t _gcry_cipher_cfb8_decrypt
+/*           */ (gcry_cipher_hd_t c,
+                 unsigned char *outbuf, size_t outbuflen,
+                 const unsigned char *inbuf, size_t inbuflen);
 
 
 /*-- cipher-ofb.c --*/
diff --git a/cipher/cipher.c b/cipher/cipher.c
index 06ce1da..124700e 100644
--- a/cipher/cipher.c
+++ b/cipher/cipher.c
@@ -415,6 +415,7 @@ _gcry_cipher_open_internal (gcry_cipher_hd_t *handle,
       case GCRY_CIPHER_MODE_ECB:
       case GCRY_CIPHER_MODE_CBC:
       case GCRY_CIPHER_MODE_CFB:
+      case GCRY_CIPHER_MODE_CFB8:
       case GCRY_CIPHER_MODE_OFB:
       case GCRY_CIPHER_MODE_CTR:
       case GCRY_CIPHER_MODE_AESWRAP:
@@ -902,6 +903,10 @@ cipher_encrypt (gcry_cipher_hd_t c, byte *outbuf, size_t outbuflen,
       rc = _gcry_cipher_cfb_encrypt (c, outbuf, outbuflen, inbuf, inbuflen);
       break;
 
+    case GCRY_CIPHER_MODE_CFB8:
+      rc = _gcry_cipher_cfb8_encrypt (c, outbuf, outbuflen, inbuf, inbuflen);
+      break;
+
     case GCRY_CIPHER_MODE_OFB:
       rc = _gcry_cipher_ofb_encrypt (c, outbuf, outbuflen, inbuf, inbuflen);
       break;
@@ -1029,6 +1034,10 @@ cipher_decrypt (gcry_cipher_hd_t c, byte *outbuf, size_t outbuflen,
       rc = _gcry_cipher_cfb_decrypt (c, outbuf, outbuflen, inbuf, inbuflen);
       break;
 
+    case GCRY_CIPHER_MODE_CFB8:
+      rc = _gcry_cipher_cfb8_decrypt (c, outbuf, outbuflen, inbuf, inbuflen);
+      break;
+
     case GCRY_CIPHER_MODE_OFB:
       rc = _gcry_cipher_ofb_encrypt (c, outbuf, outbuflen, inbuf, inbuflen);
       break;
diff --git a/tests/basic.c b/tests/basic.c
index 6d086b5..1b61122 100644
--- a/tests/basic.c
+++ b/tests/basic.c
@@ -893,7 +893,104 @@ check_cfb_cipher (void)
             16,
             "\x75\xa3\x85\x74\x1a\xb9\xce\xf8\x20\x31\x62\x3d\x55\xb1\xe4\x71" }
         }
-      }
+      },
+      { GCRY_CIPHER_AES, 1,
+ "\x2b\x7e\x15\x16\x28\xae\xd2\xa6\xab\xf7\x15\x88\x09\xcf\x4f\x3c",
+ "\x00\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f",
+ { { "\x6b",
+    1,
+    "\x3b"},
+  { "\xc1",
+    1,
+    "\x79"},
+  { "\xbe",
+    1,
+    "\x42"},
+  { "\xe2",
+    1,
+    "\x4c"},
+ }
+      },
+      { GCRY_CIPHER_AES192, 1,
+ "\x8e\x73\xb0\xf7\xda\x0e\x64\x52\xc8\x10\xf3\x2b\x80\x90\x79\xe5"
+ "\x62\xf8\xea\xd2\x52\x2c\x6b\x7b",
+ "\x00\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f",
+ { { "\x6b",
+    1,
+    "\xcd"},
+  { "\xc1",
+    1,
+    "\xa2"},
+  { "\xbe",
+    1,
+    "\x52"},
+  { "\xe2",
+    1,
+    "\x1e"},
+        }
+      },
+      { GCRY_CIPHER_AES256, 1,
+ "\x60\x3d\xeb\x10\x15\xca\x71\xbe\x2b\x73\xae\xf0\x85\x7d\x77\x81"
+ "\x1f\x35\x2c\x07\x3b\x61\x08\xd7\x2d\x98\x10\xa3\x09\x14\xdf\xf4",
+ "\x00\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f",
+ { { "\x6b",
+    1,
+    "\xdc"},
+  { "\xc1",
+    1,
+    "\x1f"},
+  { "\xbe",
+    1,
+    "\x1a"},
+  { "\xe2",
+    1,
+    "\x85"},
+        }
+      },
+      { GCRY_CIPHER_AES, 1,
+ "\x3a\x6f\x91\x59\x26\x3f\xa6\xce\xf2\xa0\x75\xca\xfa\xce\x58\x17",
+ "\x0f\xc2\x36\x62\xb7\xdb\xf7\x38\x27\xf0\xc7\xde\x32\x1c\xa3\x6e",
+ { { "\x87\xef\xeb\x8d\x55\x9e\xd3\x36\x77\x28",
+    10,
+    "\x8e\x9c\x50\x42\x56\x14\xd5\x40\xce\x11"},
+ }
+      },
+      { GCRY_CIPHER_AES192, 1,
+ "\x53\x7e\x7b\xf6\x61\xfd\x40\x24\xa0\x24\x61\x3f\x15\xb1\x36\x90"
+ "\xf7\xd0\xc8\x47\xc1\xe1\x89\x65",
+ "\x3a\x81\xf9\xd9\xd3\xc1\x55\xb0\xca\xad\x5d\x73\x34\x94\x76\xfc",
+ { { "\xd3\xd8\xb9\xb9\x84\xad\xc2\x42\x37\xee",
+    10,
+    "\x38\x79\xfe\xa7\x2a\xc9\x99\x29\xe5\x3a"},
+ }
+      },
+      { GCRY_CIPHER_AES256, 1,
+ "\xeb\xbb\x45\x66\xb5\xe1\x82\xe0\xf0\x72\x46\x6b\x0b\x31\x1d\xf3"
+ "\x8f\x91\x75\xbc\x02\x13\xa5\x53\x0b\xce\x2e\xc4\xd7\x4f\x40\x0d",
+ "\x09\x56\xa4\x8e\x01\x00\x2c\x9e\x16\x37\x6d\x6e\x30\x8d\xba\xd1",
+ { { "\xb0\xfe\x25\xac\x8d\x3d\x28\xa2\xf4\x71",
+    10,
+    "\x63\x8c\x68\x23\xe7\x25\x6f\xb5\x62\x6e"},
+ }
+      },
+      { GCRY_CIPHER_3DES, 1,
+ "\xe3\x34\x7a\x6b\x0b\xc1\x15\x2c\x64\x2a\x25\xcb\xd3\xbc\x31\xab"
+ "\xfb\xa1\x62\xa8\x1f\x19\x7c\x15",
+ "\xb7\x40\xcc\x21\xe9\x25\xe3\xc8",
+ { { "\xdb\xe9\x15\xfc\xb3\x3b\xca\x18\xef\x14",
+    10,
+    "\xf4\x80\x1a\x8d\x03\x9d\xb4\xca\x8f\xf6"},
+ }
+      },
+      { GCRY_CIPHER_3DES, 1,
+ "\x7c\xa2\x89\x38\xba\x6b\xec\x1f\xfe\xc7\x8f\x7c\xd6\x97\x61\x94"
+ "\x7c\xa2\x89\x38\xba\x6b\xec\x1f",
+ "\x95\x38\x96\x58\x6e\x49\xd3\x8f",
+ { { "\x2e\xa9\x56\xd4\xa2\x11\xdb\x68\x59\xb7",
+    10,
+    "\xf2\x0e\x53\x66\x74\xa6\x6f\xa7\x38\x05"},
+ }
+      },
     };
   gcry_cipher_hd_t hde, hdd;
   unsigned char out[MAX_DATA_LEN];
@@ -6179,6 +6276,7 @@ check_ciphers (void)
 
       check_one_cipher (algos[i], GCRY_CIPHER_MODE_ECB, 0);
       check_one_cipher (algos[i], GCRY_CIPHER_MODE_CFB, 0);
+      check_one_cipher (algos[i], GCRY_CIPHER_MODE_CFB8, 0);
       check_one_cipher (algos[i], GCRY_CIPHER_MODE_OFB, 0);
       check_one_cipher (algos[i], GCRY_CIPHER_MODE_CBC, 0);
       check_one_cipher (algos[i], GCRY_CIPHER_MODE_CBC, GCRY_CIPHER_CBC_CTS);

commit 80bd6195c794a7900791a88b943f371dc480cf07
Author: Jussi Kivilinna <[hidden email]>
Date:   Sat Feb 4 13:29:50 2017 +0200

    Register DCO for Mathias L. Baumann
   
    --
   
    Signed-off-by: Jussi Kivilinna <[hidden email]>

diff --git a/AUTHORS b/AUTHORS
index 25de16c..b80d43e 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -168,6 +168,9 @@ Jussi Kivilinna <[hidden email]>
 Markus Teich <markus dot teich at stusta dot mhn dot de>
 2014-10-08:20141008180509.GA2770@trolle:
 
+Mathias L. Baumann <mathias.baumann at sociomantic.com>
+2017-01-30:[hidden email]:
+
 Milan Broz <[hidden email]>
 2014-01-13:[hidden email]:
 

-----------------------------------------------------------------------

Summary of changes:
 AUTHORS                  |   3 ++
 cipher/cipher-cfb.c      |  86 ++++++++++++++++++++++++++++++++++++++++
 cipher/cipher-internal.h |   8 ++++
 cipher/cipher.c          |   9 +++++
 tests/basic.c            | 100 ++++++++++++++++++++++++++++++++++++++++++++++-
 5 files changed, 205 insertions(+), 1 deletion(-)


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