Streams - add single call crypt functions

doc/crypt.tex

@@ -1301,6 +1301,12 @@ \chapter{Stream Ciphers}
 err = chacha_done(&st);
 \end{verbatim}
 
+To encrypt plaintext (or decrypt ciphertext) using ChaCha for data already in
+memory with a single function call, the following function may be used.
+\begin{verbatim}
+err = chacha_memory(key, keylen, iv, ivlen, datain, datalen, rounds, dataout);
+\end{verbatim}
+
 \mysection{Salsa20 and XSalsa20}
 
 \textit{Salsa20} was Daniel Bernstein's submission to the EU eSTREAM
@@ -1361,6 +1367,18 @@ \chapter{Stream Ciphers}
 err = salsa20_done(&st);
 \end{verbatim}
 
+To encrypt plaintext (or decrypt ciphertext) using Salsa20 for data already in
+memory with a single function call, the following function may be used.
+\begin{verbatim}
+err = salsa20_memory(key, keylen, iv, ivlen, datain, datalen, rounds, dataout);
+\end{verbatim}
+
+To encrypt plaintext (or decrypt ciphertext) using XSalsa20 for data already in
+memory with a single function call, the following function may be used.
+\begin{verbatim}
+err = xsalsa20_memory(key, keylen, nonce, nonce_len, datain, datalen, rounds, dataout);
+\end{verbatim}
+
 For both \textit{Salsa20} and \textit{XSalsa20} rounds must be an even number
 and if set to 0 the default number of rounds, 20, will be used.
 \vspace{1mm}
@@ -1427,6 +1445,12 @@ \chapter{Stream Ciphers}
 you do not need to re-run \textit{sosemanuk\_setup()} again, unless of course, you called
 \textit{sosemanuk\_done()}.
 
+To encrypt plaintext (or decrypt ciphertext) using Sosemanuk for data already in
+memory with a single function call, the following function may be used.
+\begin{verbatim}
+err = sosemanuk_memory(key, keylen, iv, ivlen, datain, datalen, dataout);
+\end{verbatim}
+
 \mysection{Rabbit}
 
 \textit{Rabbit}, along with Salsa20, Sosemanuk, and HC-128, was named one of the winners
@@ -1482,6 +1506,12 @@ \chapter{Stream Ciphers}
 You will want to use a different IV but you do not need to call \textit{rabbit\_setup()} a 2nd time,
 unless of course, you skipped calling \textit{rabbit\_setiv()}.
 
+To encrypt plaintext (or decrypt ciphertext) using Rabbit for data already in
+memory with a single function call, the following function may be used.
+\begin{verbatim}
+err = rabbit_memory(key, keylen, iv, ivlen, datain, datalen, dataout);
+\end{verbatim}
+
 For more information, see: \newline
 \hspace{4em}- \url{http://www.ecrypt.eu.org/stream/p3ciphers/rabbit/rabbit_p3.pdf} \newline
 \hspace{4em}- \url{https://tools.ietf.org/html/rfc4503}
@@ -1515,6 +1545,12 @@ \chapter{Stream Ciphers}
 err = rc4_stream_done(&st);
 \end{verbatim}
 
+To encrypt plaintext (or decrypt ciphertext) using RC6 for data already in
+memory with a single function call, the following function may be used.
+\begin{verbatim}
+err = rc4_stream_memory(key, keylen, datain, datalen, dataout);
+\end{verbatim}
+
 \mysection{Sober128}
 
 Supported key size: must be multiple of 4 bytes
@@ -1542,6 +1578,12 @@ \chapter{Stream Ciphers}
 err = sober128_stream_done(&st);
 \end{verbatim}
 
+To encrypt plaintext (or decrypt ciphertext) using Sober128 for data already in
+memory with a single function call, the following function may be used.
+\begin{verbatim}
+err = sober128_stream_memory(key, keylen, iv, ivlen, datain, datalen, dataout);
+\end{verbatim}
+
 \chapter{Authenticated Encryption}
 
 Authenticated Encryption - sometimes also called Authenticated Encryption with Associated Data (AEAD) - is a variant of encryption

libtomcrypt_VS2008.vcproj

@@ -2582,6 +2582,10 @@
 					RelativePath="src\stream\chacha\chacha_keystream.c"
 					>
 				</File>
+				<File
+					RelativePath="src\stream\chacha\chacha_memory.c"
+					>
+				</File>
 				<File
 					RelativePath="src\stream\chacha\chacha_setup.c"
 					>
@@ -2598,6 +2602,10 @@
 					RelativePath="src\stream\rabbit\rabbit.c"
 					>
 				</File>
+				<File
+					RelativePath="src\stream\rabbit\rabbit_memory.c"
+					>
+				</File>
 			</Filter>
 			<Filter
 				Name="rc4"
@@ -2606,6 +2614,10 @@
 					RelativePath="src\stream\rc4\rc4_stream.c"
 					>
 				</File>
+				<File
+					RelativePath="src\stream\rc4\rc4_stream_memory.c"
+					>
+				</File>
 				<File
 					RelativePath="src\stream\rc4\rc4_test.c"
 					>
@@ -2630,6 +2642,10 @@
 					RelativePath="src\stream\salsa20\salsa20_keystream.c"
 					>
 				</File>
+				<File
+					RelativePath="src\stream\salsa20\salsa20_memory.c"
+					>
+				</File>
 				<File
 					RelativePath="src\stream\salsa20\salsa20_setup.c"
 					>
@@ -2638,6 +2654,10 @@
 					RelativePath="src\stream\salsa20\salsa20_test.c"
 					>
 				</File>
+				<File
+					RelativePath="src\stream\salsa20\xsalsa20_memory.c"
+					>
+				</File>
 				<File
 					RelativePath="src\stream\salsa20\xsalsa20_setup.c"
 					>
@@ -2654,6 +2674,10 @@
 					RelativePath="src\stream\sober128\sober128_stream.c"
 					>
 				</File>
+				<File
+					RelativePath="src\stream\sober128\sober128_stream_memory.c"
+					>
+				</File>
 				<File
 					RelativePath="src\stream\sober128\sober128_test.c"
 					>
@@ -2710,6 +2734,10 @@
 					RelativePath="src\stream\sosemanuk\sosemanuk.c"
 					>
 				</File>
+				<File
+					RelativePath="src\stream\sosemanuk\sosemanuk_memory.c"
+					>
+				</File>
 				<File
 					RelativePath="src\stream\sosemanuk\sosemanuk_test.c"
 					>

makefile.mingw

@@ -199,14 +199,17 @@ src/pk/rsa/rsa_sign_saltlen_get.o src/pk/rsa/rsa_verify_hash.o src/prngs/chacha2
 src/prngs/rc4.o src/prngs/rng_get_bytes.o src/prngs/rng_make_prng.o src/prngs/sober128.o \
 src/prngs/sprng.o src/prngs/yarrow.o src/stream/chacha/chacha_crypt.o src/stream/chacha/chacha_done.o \
 src/stream/chacha/chacha_ivctr32.o src/stream/chacha/chacha_ivctr64.o \
-src/stream/chacha/chacha_keystream.o src/stream/chacha/chacha_setup.o src/stream/chacha/chacha_test.o \
-src/stream/rabbit/rabbit.o src/stream/rc4/rc4_stream.o src/stream/rc4/rc4_test.o \
-src/stream/salsa20/salsa20_crypt.o src/stream/salsa20/salsa20_done.o \
+src/stream/chacha/chacha_keystream.o src/stream/chacha/chacha_memory.o \
+src/stream/chacha/chacha_setup.o src/stream/chacha/chacha_test.o src/stream/rabbit/rabbit.o \
+src/stream/rabbit/rabbit_memory.o src/stream/rc4/rc4_stream.o src/stream/rc4/rc4_stream_memory.o \
+src/stream/rc4/rc4_test.o src/stream/salsa20/salsa20_crypt.o src/stream/salsa20/salsa20_done.o \
 src/stream/salsa20/salsa20_ivctr64.o src/stream/salsa20/salsa20_keystream.o \
-src/stream/salsa20/salsa20_setup.o src/stream/salsa20/salsa20_test.o \
+src/stream/salsa20/salsa20_memory.o src/stream/salsa20/salsa20_setup.o \
+src/stream/salsa20/salsa20_test.o src/stream/salsa20/xsalsa20_memory.o \
 src/stream/salsa20/xsalsa20_setup.o src/stream/salsa20/xsalsa20_test.o \
-src/stream/sober128/sober128_stream.o src/stream/sober128/sober128_test.o \
-src/stream/sosemanuk/sosemanuk.o src/stream/sosemanuk/sosemanuk_test.o
+src/stream/sober128/sober128_stream.o src/stream/sober128/sober128_stream_memory.o \
+src/stream/sober128/sober128_test.o src/stream/sosemanuk/sosemanuk.o \
+src/stream/sosemanuk/sosemanuk_memory.o src/stream/sosemanuk/sosemanuk_test.o
 
 #List of test objects to compile
 TOBJECTS=tests/base16_test.o tests/base32_test.o tests/base64_test.o tests/cipher_hash_test.o \

makefile.msvc

@@ -192,14 +192,17 @@ src/pk/rsa/rsa_sign_saltlen_get.obj src/pk/rsa/rsa_verify_hash.obj src/prngs/cha
 src/prngs/rc4.obj src/prngs/rng_get_bytes.obj src/prngs/rng_make_prng.obj src/prngs/sober128.obj \
 src/prngs/sprng.obj src/prngs/yarrow.obj src/stream/chacha/chacha_crypt.obj src/stream/chacha/chacha_done.obj \
 src/stream/chacha/chacha_ivctr32.obj src/stream/chacha/chacha_ivctr64.obj \
-src/stream/chacha/chacha_keystream.obj src/stream/chacha/chacha_setup.obj src/stream/chacha/chacha_test.obj \
-src/stream/rabbit/rabbit.obj src/stream/rc4/rc4_stream.obj src/stream/rc4/rc4_test.obj \
-src/stream/salsa20/salsa20_crypt.obj src/stream/salsa20/salsa20_done.obj \
+src/stream/chacha/chacha_keystream.obj src/stream/chacha/chacha_memory.obj \
+src/stream/chacha/chacha_setup.obj src/stream/chacha/chacha_test.obj src/stream/rabbit/rabbit.obj \
+src/stream/rabbit/rabbit_memory.obj src/stream/rc4/rc4_stream.obj src/stream/rc4/rc4_stream_memory.obj \
+src/stream/rc4/rc4_test.obj src/stream/salsa20/salsa20_crypt.obj src/stream/salsa20/salsa20_done.obj \
 src/stream/salsa20/salsa20_ivctr64.obj src/stream/salsa20/salsa20_keystream.obj \
-src/stream/salsa20/salsa20_setup.obj src/stream/salsa20/salsa20_test.obj \
+src/stream/salsa20/salsa20_memory.obj src/stream/salsa20/salsa20_setup.obj \
+src/stream/salsa20/salsa20_test.obj src/stream/salsa20/xsalsa20_memory.obj \
 src/stream/salsa20/xsalsa20_setup.obj src/stream/salsa20/xsalsa20_test.obj \
-src/stream/sober128/sober128_stream.obj src/stream/sober128/sober128_test.obj \
-src/stream/sosemanuk/sosemanuk.obj src/stream/sosemanuk/sosemanuk_test.obj
+src/stream/sober128/sober128_stream.obj src/stream/sober128/sober128_stream_memory.obj \
+src/stream/sober128/sober128_test.obj src/stream/sosemanuk/sosemanuk.obj \
+src/stream/sosemanuk/sosemanuk_memory.obj src/stream/sosemanuk/sosemanuk_test.obj
 
 #List of test objects to compile
 TOBJECTS=tests/base16_test.obj tests/base32_test.obj tests/base64_test.obj tests/cipher_hash_test.obj \

makefile.unix

@@ -209,14 +209,17 @@ src/pk/rsa/rsa_sign_saltlen_get.o src/pk/rsa/rsa_verify_hash.o src/prngs/chacha2
 src/prngs/rc4.o src/prngs/rng_get_bytes.o src/prngs/rng_make_prng.o src/prngs/sober128.o \
 src/prngs/sprng.o src/prngs/yarrow.o src/stream/chacha/chacha_crypt.o src/stream/chacha/chacha_done.o \
 src/stream/chacha/chacha_ivctr32.o src/stream/chacha/chacha_ivctr64.o \
-src/stream/chacha/chacha_keystream.o src/stream/chacha/chacha_setup.o src/stream/chacha/chacha_test.o \
-src/stream/rabbit/rabbit.o src/stream/rc4/rc4_stream.o src/stream/rc4/rc4_test.o \
-src/stream/salsa20/salsa20_crypt.o src/stream/salsa20/salsa20_done.o \
+src/stream/chacha/chacha_keystream.o src/stream/chacha/chacha_memory.o \
+src/stream/chacha/chacha_setup.o src/stream/chacha/chacha_test.o src/stream/rabbit/rabbit.o \
+src/stream/rabbit/rabbit_memory.o src/stream/rc4/rc4_stream.o src/stream/rc4/rc4_stream_memory.o \
+src/stream/rc4/rc4_test.o src/stream/salsa20/salsa20_crypt.o src/stream/salsa20/salsa20_done.o \
 src/stream/salsa20/salsa20_ivctr64.o src/stream/salsa20/salsa20_keystream.o \
-src/stream/salsa20/salsa20_setup.o src/stream/salsa20/salsa20_test.o \
+src/stream/salsa20/salsa20_memory.o src/stream/salsa20/salsa20_setup.o \
+src/stream/salsa20/salsa20_test.o src/stream/salsa20/xsalsa20_memory.o \
 src/stream/salsa20/xsalsa20_setup.o src/stream/salsa20/xsalsa20_test.o \
-src/stream/sober128/sober128_stream.o src/stream/sober128/sober128_test.o \
-src/stream/sosemanuk/sosemanuk.o src/stream/sosemanuk/sosemanuk_test.o
+src/stream/sober128/sober128_stream.o src/stream/sober128/sober128_stream_memory.o \
+src/stream/sober128/sober128_test.o src/stream/sosemanuk/sosemanuk.o \
+src/stream/sosemanuk/sosemanuk_memory.o src/stream/sosemanuk/sosemanuk_test.o
 
 #List of test objects to compile (all goes to libtomcrypt_prof.a)
 TOBJECTS=tests/base16_test.o tests/base32_test.o tests/base64_test.o tests/cipher_hash_test.o \

makefile_include.mk

@@ -369,14 +369,17 @@ src/pk/rsa/rsa_sign_saltlen_get.o src/pk/rsa/rsa_verify_hash.o src/prngs/chacha2
 src/prngs/rc4.o src/prngs/rng_get_bytes.o src/prngs/rng_make_prng.o src/prngs/sober128.o \
 src/prngs/sprng.o src/prngs/yarrow.o src/stream/chacha/chacha_crypt.o src/stream/chacha/chacha_done.o \
 src/stream/chacha/chacha_ivctr32.o src/stream/chacha/chacha_ivctr64.o \
-src/stream/chacha/chacha_keystream.o src/stream/chacha/chacha_setup.o src/stream/chacha/chacha_test.o \
-src/stream/rabbit/rabbit.o src/stream/rc4/rc4_stream.o src/stream/rc4/rc4_test.o \
-src/stream/salsa20/salsa20_crypt.o src/stream/salsa20/salsa20_done.o \
+src/stream/chacha/chacha_keystream.o src/stream/chacha/chacha_memory.o \
+src/stream/chacha/chacha_setup.o src/stream/chacha/chacha_test.o src/stream/rabbit/rabbit.o \
+src/stream/rabbit/rabbit_memory.o src/stream/rc4/rc4_stream.o src/stream/rc4/rc4_stream_memory.o \
+src/stream/rc4/rc4_test.o src/stream/salsa20/salsa20_crypt.o src/stream/salsa20/salsa20_done.o \
 src/stream/salsa20/salsa20_ivctr64.o src/stream/salsa20/salsa20_keystream.o \
-src/stream/salsa20/salsa20_setup.o src/stream/salsa20/salsa20_test.o \
+src/stream/salsa20/salsa20_memory.o src/stream/salsa20/salsa20_setup.o \
+src/stream/salsa20/salsa20_test.o src/stream/salsa20/xsalsa20_memory.o \
 src/stream/salsa20/xsalsa20_setup.o src/stream/salsa20/xsalsa20_test.o \
-src/stream/sober128/sober128_stream.o src/stream/sober128/sober128_test.o \
-src/stream/sosemanuk/sosemanuk.o src/stream/sosemanuk/sosemanuk_test.o
+src/stream/sober128/sober128_stream.o src/stream/sober128/sober128_stream_memory.o \
+src/stream/sober128/sober128_test.o src/stream/sosemanuk/sosemanuk.o \
+src/stream/sosemanuk/sosemanuk_memory.o src/stream/sosemanuk/sosemanuk_test.o
 
 # List of test objects to compile (all goes to libtomcrypt_prof.a)
 TOBJECTS=tests/base16_test.o tests/base32_test.o tests/base64_test.o tests/cipher_hash_test.o \

src/headers/tomcrypt_cipher.h

@@ -1009,6 +1009,9 @@ int chacha_crypt(chacha_state *st, const unsigned char *in, unsigned long inlen,
 int chacha_keystream(chacha_state *st, unsigned char *out, unsigned long outlen);
 int chacha_done(chacha_state *st);
 int chacha_test(void);
+int chacha_memory(const unsigned char *key,    unsigned long keylen,  unsigned long rounds,
+                  const unsigned char *iv,     unsigned long ivlen,   ulong64 counter,
+                  const unsigned char *datain, unsigned long datalen, unsigned char *dataout);
 
 #endif /* LTC_CHACHA */
 
@@ -1028,6 +1031,9 @@ int salsa20_crypt(salsa20_state *st, const unsigned char *in, unsigned long inle
 int salsa20_keystream(salsa20_state *st, unsigned char *out, unsigned long outlen);
 int salsa20_done(salsa20_state *st);
 int salsa20_test(void);
+int salsa20_memory(const unsigned char *key,    unsigned long keylen,  unsigned long rounds,
+                   const unsigned char *iv,     unsigned long ivlen,   ulong64 counter,
+                   const unsigned char *datain, unsigned long datalen, unsigned char *dataout);
 
 #endif /* LTC_SALSA20 */
 
@@ -1037,6 +1043,9 @@ int xsalsa20_setup(salsa20_state *st, const unsigned char *key,   unsigned long
                                       const unsigned char *nonce, unsigned long noncelen,
                                       int rounds);
 int xsalsa20_test(void);
+int xsalsa20_memory(const unsigned char *key,    unsigned long keylen,   unsigned long rounds,
+                    const unsigned char *nonce,  unsigned long noncelen,
+                    const unsigned char *datain, unsigned long datalen,  unsigned char *dataout);
 
 #endif /* LTC_XSALSA20 */
 
@@ -1061,6 +1070,10 @@ int sosemanuk_crypt(sosemanuk_state *st, const unsigned char *in, unsigned long
 int sosemanuk_keystream(sosemanuk_state *st, unsigned char *out, unsigned long outlen);
 int sosemanuk_done(sosemanuk_state *st);
 int sosemanuk_test(void);
+int sosemanuk_memory(const unsigned char *key,    unsigned long keylen,
+                     const unsigned char *iv,     unsigned long ivlen,
+                     const unsigned char *datain, unsigned long datalen,
+                     unsigned char *dataout);
 
 #endif /* LTC_SOSEMANUK */
 
@@ -1085,6 +1098,10 @@ int rabbit_crypt(rabbit_state* st, const unsigned char *in, unsigned long inlen,
 int rabbit_keystream(rabbit_state* st, unsigned char *out, unsigned long outlen);
 int rabbit_done(rabbit_state *st);
 int rabbit_test(void);
+int rabbit_memory(const unsigned char *key,    unsigned long keylen,
+                  const unsigned char *iv,     unsigned long ivlen,
+                  const unsigned char *datain, unsigned long datalen,
+                  unsigned char *dataout);
 
 #endif /* LTC_RABBIT */
 
@@ -1100,6 +1117,9 @@ int rc4_stream_crypt(rc4_state *st, const unsigned char *in, unsigned long inlen
 int rc4_stream_keystream(rc4_state *st, unsigned char *out, unsigned long outlen);
 int rc4_stream_done(rc4_state *st);
 int rc4_stream_test(void);
+int rc4_stream_memory(const unsigned char *key,    unsigned long keylen,
+                      const unsigned char *datain, unsigned long datalen,
+                      unsigned char *dataout);
 
 #endif /* LTC_RC4_STREAM */
 
@@ -1119,6 +1139,10 @@ int sober128_stream_crypt(sober128_state *st, const unsigned char *in, unsigned
 int sober128_stream_keystream(sober128_state *st, unsigned char *out, unsigned long outlen);
 int sober128_stream_done(sober128_state *st);
 int sober128_stream_test(void);
+int sober128_stream_memory(const unsigned char *key,    unsigned long keylen,
+                           const unsigned char *iv,     unsigned long ivlen,
+                           const unsigned char *datain, unsigned long datalen,
+                           unsigned char *dataout);
 
 #endif /* LTC_SOBER128_STREAM */
 

src/stream/chacha/chacha_memory.c

@@ -0,0 +1,51 @@
+/* LibTomCrypt, modular cryptographic library -- Tom St Denis
+ *
+ * LibTomCrypt is a library that provides various cryptographic
+ * algorithms in a highly modular and flexible manner.
+ *
+ * The library is free for all purposes without any express
+ * guarantee it works.
+ */
+
+#include "tomcrypt_private.h"
+
+#ifdef LTC_CHACHA
+
+/**
+   Encrypt (or decrypt) bytes of ciphertext (or plaintext) with ChaCha
+   @param key     The key
+   @param keylen  The key length
+   @param iv      The initial vector
+   @param ivlen   The initial vector length
+   @param datain  The plaintext (or ciphertext)
+   @param datalen The length of the input and output (octets)
+   @param rounds  The number of rounds
+   @param dataout [out] The ciphertext (or plaintext)
+   @return CRYPT_OK if successful
+*/
+int chacha_memory(const unsigned char *key,    unsigned long keylen,  unsigned long rounds,
+                  const unsigned char *iv,     unsigned long ivlen,   ulong64 counter,
+                  const unsigned char *datain, unsigned long datalen, unsigned char *dataout)
+{
+   chacha_state st;
+   int err;
+
+   LTC_ARGCHK(ivlen <= 8 || counter < 4294967296);       /* 2**32 */
+
+   if ((err = chacha_setup(&st, key, keylen, rounds))       != CRYPT_OK) goto WIPE_KEY;
+   if (ivlen > 8) {
+        if ((err = chacha_ivctr32(&st, iv, ivlen, counter)) != CRYPT_OK) goto WIPE_KEY;
+   } else {
+        if ((err = chacha_ivctr64(&st, iv, ivlen, counter)) != CRYPT_OK) goto WIPE_KEY;
+   }
+   err = chacha_crypt(&st, datain, datalen, dataout);
+WIPE_KEY:
+   chacha_done(&st);
+   return err;
+}
+
+#endif /* LTC_CHACHA */
+
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */