git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@10888 35acf78f-673a-0410-8e92-d51de3d6d3f4

2 files changed, 184 insertions, 41 deletions

diff --git a/os/hal/templates/hal_crypto_lld.c b/os/hal/templates/hal_crypto_lld.c
index 9268e5398..1aa90d2af 100644
--- a/os/hal/templates/hal_crypto_lld.c
+++ b/os/hal/templates/hal_crypto_lld.c
@@ -15,8 +15,8 @@
 */

 

 /**

- * @file    CRYPv1/hal_crypto_lld.c

- * @brief   STM32 cryptographic subsystem low level driver source.

+ * @file    hal_crypto_lld.c

+ * @brief   PLATFORM cryptographic subsystem low level driver source.

  *

  * @addtogroup CRYPTO

  * @{

@@ -120,6 +120,9 @@ cryerror_t cry_lld_loadkey(CRYDriver *cryp,
 

 /**

  * @brief   Encryption operation using AES-ECB.

+ * @note    The function operates on data buffers whose lenght is a multiple

+ *          of an AES block, this means that padding must be done by the

+ *          caller.

  *

  * @param[in] cryp      pointer to the @p CRYDriver object

  * @param[in] key_id    the key to be used for the operation, zero is the

@@ -137,7 +140,7 @@ cryerror_t cry_lld_loadkey(CRYDriver *cryp,
  * @retval CRY_ERR_INV_KEY_ID   if the specified key identifier is invalid

  *                              or refers and empty key slot.

  *

- * @api

+ * @notapi

  */

 cryerror_t cry_lld_encrypt_AES_ECB(CRYDriver *cryp,

                                    crykey_t key_id,

@@ -151,11 +154,14 @@ cryerror_t cry_lld_encrypt_AES_ECB(CRYDriver *cryp,
   (void)in;

   (void)out;

 

-  return CRY_NOERROR;

+  return CRY_ERR_INV_ALGO;

 }

 

 /**

  * @brief   Decryption operation using AES-ECB.

+ * @note    The function operates on data buffers whose lenght is a multiple

+ *          of an AES block, this means that padding must be done by the

+ *          caller.

  *

  * @param[in] cryp      pointer to the @p CRYDriver object

  * @param[in] key_id    the key to be used for the operation, zero is the

@@ -173,7 +179,7 @@ cryerror_t cry_lld_encrypt_AES_ECB(CRYDriver *cryp,
  * @retval CRY_ERR_INV_KEY_ID   if the specified key identifier is invalid

  *                              or refers and empty key slot.

  *

- * @api

+ * @notapi

  */

 cryerror_t cry_lld_decrypt_AES_ECB(CRYDriver *cryp,

                                    crykey_t key_id,

@@ -187,11 +193,14 @@ cryerror_t cry_lld_decrypt_AES_ECB(CRYDriver *cryp,
   (void)in;

   (void)out;

 

-  return CRY_NOERROR;

+  return CRY_ERR_INV_ALGO;

 }

 

 /**

  * @brief   Encryption operation using AES-CBC.

+ * @note    The function operates on data buffers whose lenght is a multiple

+ *          of an AES block, this means that padding must be done by the

+ *          caller.

  *

  * @param[in] cryp      pointer to the @p CRYDriver object

  * @param[in] key_id    the key to be used for the operation, zero is the

@@ -201,7 +210,7 @@ cryerror_t cry_lld_decrypt_AES_ECB(CRYDriver *cryp,
  *                      multiple of the selected key size

  * @param[in] in        buffer containing the input plaintext

  * @param[out] out      buffer for the output cyphertext

- * @param[in] iv        input vector

+ * @param[in] iv        128 bits initial vector

  * @return              The operation status.

  * @retval CRY_NOERROR          if the operation succeeded.

  * @retval CRY_ERR_INV_ALGO     if the operation is unsupported on this

@@ -210,7 +219,7 @@ cryerror_t cry_lld_decrypt_AES_ECB(CRYDriver *cryp,
  * @retval CRY_ERR_INV_KEY_ID   if the specified key identifier is invalid

  *                              or refers and empty key slot.

  *

- * @api

+ * @notapi

  */

 cryerror_t cry_lld_encrypt_AES_CBC(CRYDriver *cryp,

                                    crykey_t key_id,

@@ -226,11 +235,14 @@ cryerror_t cry_lld_encrypt_AES_CBC(CRYDriver *cryp,
   (void)out;

   (void)iv;

 

-  return CRY_NOERROR;

+  return CRY_ERR_INV_ALGO;

 }

 

 /**

  * @brief   Decryption operation using AES-CBC.

+ * @note    The function operates on data buffers whose lenght is a multiple

+ *          of an AES block, this means that padding must be done by the

+ *          caller.

  *

  * @param[in] cryp      pointer to the @p CRYDriver object

  * @param[in] key_id    the key to be used for the operation, zero is the

@@ -240,7 +252,7 @@ cryerror_t cry_lld_encrypt_AES_CBC(CRYDriver *cryp,
  *                      multiple of the selected key size

  * @param[in] in        buffer containing the input plaintext

  * @param[out] out      buffer for the output cyphertext

- * @param[in] iv        input vector

+ * @param[in] iv        128 bits initial vector

  * @return              The operation status.

  * @retval CRY_NOERROR          if the operation succeeded.

  * @retval CRY_ERR_INV_ALGO     if the operation is unsupported on this

@@ -249,7 +261,7 @@ cryerror_t cry_lld_encrypt_AES_CBC(CRYDriver *cryp,
  * @retval CRY_ERR_INV_KEY_ID   if the specified key identifier is invalid

  *                              or refers and empty key slot.

  *

- * @api

+ * @notapi

  */

 cryerror_t cry_lld_decrypt_AES_CBC(CRYDriver *cryp,

                                    crykey_t key_id,

@@ -265,11 +277,14 @@ cryerror_t cry_lld_decrypt_AES_CBC(CRYDriver *cryp,
   (void)out;

   (void)iv;

 

-  return CRY_NOERROR;

+  return CRY_ERR_INV_ALGO;

 }

 

 /**

  * @brief   Encryption operation using AES-CFB.

+ * @note    The function operates on data buffers whose lenght is a multiple

+ *          of an AES block, this means that padding must be done by the

+ *          caller.

  *

  * @param[in] cryp      pointer to the @p CRYDriver object

  * @param[in] key_id    the key to be used for the operation, zero is the

@@ -279,7 +294,7 @@ cryerror_t cry_lld_decrypt_AES_CBC(CRYDriver *cryp,
  *                      multiple of the selected key size

  * @param[in] in        buffer containing the input plaintext

  * @param[out] out      buffer for the output cyphertext

- * @param[in] iv        input vector

+ * @param[in] iv        128 bits initial vector

  * @return              The operation status.

  * @retval CRY_NOERROR          if the operation succeeded.

  * @retval CRY_ERR_INV_ALGO     if the operation is unsupported on this

@@ -288,7 +303,7 @@ cryerror_t cry_lld_decrypt_AES_CBC(CRYDriver *cryp,
  * @retval CRY_ERR_INV_KEY_ID   if the specified key identifier is invalid

  *                              or refers and empty key slot.

  *

- * @api

+ * @notapi

  */

 cryerror_t cry_lld_encrypt_AES_CFB(CRYDriver *cryp,

                                    crykey_t key_id,

@@ -304,11 +319,14 @@ cryerror_t cry_lld_encrypt_AES_CFB(CRYDriver *cryp,
   (void)out;

   (void)iv;

 

-  return CRY_NOERROR;

+  return CRY_ERR_INV_ALGO;

 }

 

 /**

  * @brief   Decryption operation using AES-CFB.

+ * @note    The function operates on data buffers whose lenght is a multiple

+ *          of an AES block, this means that padding must be done by the

+ *          caller.

  *

  * @param[in] cryp      pointer to the @p CRYDriver object

  * @param[in] key_id    the key to be used for the operation, zero is the

@@ -318,7 +336,7 @@ cryerror_t cry_lld_encrypt_AES_CFB(CRYDriver *cryp,
  *                      multiple of the selected key size

  * @param[in] in        buffer containing the input plaintext

  * @param[out] out      buffer for the output cyphertext

- * @param[in] iv        input vector

+ * @param[in] iv        128 bits initial vector

  * @return              The operation status.

  * @retval CRY_NOERROR          if the operation succeeded.

  * @retval CRY_ERR_INV_ALGO     if the operation is unsupported on this

@@ -327,7 +345,7 @@ cryerror_t cry_lld_encrypt_AES_CFB(CRYDriver *cryp,
  * @retval CRY_ERR_INV_KEY_ID   if the specified key identifier is invalid

  *                              or refers and empty key slot.

  *

- * @api

+ * @notapi

  */

 cryerror_t cry_lld_decrypt_AES_CFB(CRYDriver *cryp,

                                    crykey_t key_id,

@@ -343,22 +361,25 @@ cryerror_t cry_lld_decrypt_AES_CFB(CRYDriver *cryp,
   (void)out;

   (void)iv;

 

-  return CRY_NOERROR;

+  return CRY_ERR_INV_ALGO;

 }

 

 /**

  * @brief   Encryption operation using AES-CTR.

+ * @note    The function operates on data buffers whose lenght is a multiple

+ *          of an AES block, this means that padding must be done by the

+ *          caller.

  *

  * @param[in] cryp      pointer to the @p CRYDriver object

  * @param[in] key_id    the key to be used for the operation, zero is the

  *                      transient key, other values are keys stored in an

  *                      unspecified way

  * @param[in] size      size of the plaintext buffer, this number must be a

- *                      multiple of the selected key size

+ *                      multiple of 16

  * @param[in] in        buffer containing the input plaintext

  * @param[out] out      buffer for the output cyphertext

- * @param[in] nonce     the "nonce" constant

- * @param[in,out] cnt   the initial value of the counter, normally zero

+ * @param[in] iv        128 bits initial vector + counter, it contains

+ *                      a 96 bits IV and a 32 bits counter

  * @return              The operation status.

  * @retval CRY_NOERROR          if the operation succeeded.

  * @retval CRY_ERR_INV_ALGO     if the operation is unsupported on this

@@ -367,40 +388,41 @@ cryerror_t cry_lld_decrypt_AES_CFB(CRYDriver *cryp,
  * @retval CRY_ERR_INV_KEY_ID   if the specified key identifier is invalid

  *                              or refers and empty key slot.

  *

- * @api

+ * @notapi

  */

 cryerror_t cry_lld_encrypt_AES_CTR(CRYDriver *cryp,

                                    crykey_t key_id,

                                    size_t size,

                                    const uint8_t *in,

                                    uint8_t *out,

-                                   const uint8_t *nonce,

-                                   uint8_t *cnt) {

+                                   const uint8_t *iv) {

 

   (void)cryp;

   (void)key_id;

   (void)size;

   (void)in;

   (void)out;

-  (void)nonce;

-  (void)cnt;

+  (void)iv;

 

-  return CRY_NOERROR;

+  return CRY_ERR_INV_ALGO;

 }

 

 /**

  * @brief   Decryption operation using AES-CTR.

+ * @note    The function operates on data buffers whose lenght is a multiple

+ *          of an AES block, this means that padding must be done by the

+ *          caller.

  *

  * @param[in] cryp      pointer to the @p CRYDriver object

  * @param[in] key_id    the key to be used for the operation, zero is the

  *                      transient key, other values are keys stored in an

  *                      unspecified way

  * @param[in] size      size of the plaintext buffer, this number must be a

- *                      multiple of the selected key size

- * @param[in] in        buffer containing the input plaintext

- * @param[out] out      buffer for the output cyphertext

- * @param[in] nonce     the "nonce" constant

- * @param[in,out] cnt   the initial value of the counter, normally zero

+ *                      multiple of 16

+ * @param[in] in        buffer containing the input cyphertext

+ * @param[out] out      buffer for the output plaintext

+ * @param[in] iv        128 bits initial vector + counter, it contains

+ *                      a 96 bits IV and a 32 bits counter

  * @return              The operation status.

  * @retval CRY_NOERROR          if the operation succeeded.

  * @retval CRY_ERR_INV_ALGO     if the operation is unsupported on this

@@ -416,18 +438,122 @@ cryerror_t cry_lld_decrypt_AES_CTR(CRYDriver *cryp,
                                    size_t size,

                                    const uint8_t *in,

                                    uint8_t *out,

-                                   const uint8_t *nonce,

-                                   uint8_t *cnt) {

+                                   const uint8_t *iv) {

 

   (void)cryp;

   (void)key_id;

   (void)size;

   (void)in;

   (void)out;

-  (void)nonce;

-  (void)cnt;

+  (void)iv;

 

-  return CRY_NOERROR;

+  return CRY_ERR_INV_ALGO;

+}

+

+/**

+ * @brief   Encryption operation using AES-GCM.

+ * @note    The function operates on data buffers whose lenght is a multiple

+ *          of an AES block, this means that padding must be done by the

+ *          caller.

+ *

+ * @param[in] cryp      pointer to the @p CRYDriver object

+ * @param[in] key_id    the key to be used for the operation, zero is the

+ *                      transient key, other values are keys stored in an

+ *                      unspecified way

+ * @param[in] size      size of the text buffers, this number must be a

+ *                      multiple of 16

+ * @param[in] in        buffer containing the input plaintext

+ * @param[out] out       buffer for the output cyphertext

+ * @param[in] iv        128 bits initial vector + counter, it contains

+ *                      a 96 bits IV and a 32 bits counter

+ * @param[in] aadsize   size of the authentication data, this number must be a

+ *                      multiple of 16

+ * @param[in] aad       buffer containing the authentication data

+ * @param[in] authtag   128 bits buffer for the generated authentication tag

+ * @return              The operation status.

+ * @retval CRY_NOERROR          if the operation succeeded.

+ * @retval CRY_ERR_INV_ALGO     if the operation is unsupported on this

+ *                              device instance.

+ * @retval CRY_ERR_INV_KEY_TYPE the selected key is invalid for this operation.

+ * @retval CRY_ERR_INV_KEY_ID   if the specified key identifier is invalid

+ *                              or refers and empty key slot.

+ *

+ * @notapi

+ */

+cryerror_t cry_lld_encrypt_AES_GCM(CRYDriver *cryp,

+                                   crykey_t key_id,

+                                   size_t size,

+                                   const uint8_t *in,

+                                   uint8_t *out,

+                                   const uint8_t *iv,

+                                   size_t aadsize,

+                                   const uint8_t *aad,

+                                   uint8_t *authtag) {

+

+  (void)cryp;

+  (void)key_id;

+  (void)size;

+  (void)in;

+  (void)out;

+  (void)iv;

+  (void)aadsize;

+  (void)aad;

+  (void)authtag;

+

+  return CRY_ERR_INV_ALGO;

+}

+

+/**

+ * @brief   Decryption operation using AES-GCM.

+ * @note    The function operates on data buffers whose lenght is a multiple

+ *          of an AES block, this means that padding must be done by the

+ *          caller.

+ *

+ * @param[in] cryp      pointer to the @p CRYDriver object

+ * @param[in] key_id    the key to be used for the operation, zero is the

+ *                      transient key, other values are keys stored in an

+ *                      unspecified way

+ * @param[in] size      size of the text buffers, this number must be a

+ *                      multiple of 16

+ * @param[in] in        buffer for the output cyphertext

+ * @param[out] out      buffer containing the input plaintext

+ * @param[in] iv        128 bits initial vector + counter, it contains

+ *                      a 96 bits IV and a 32 bits counter

+ * @param[in] aadsize   size of the authentication data, this number must be a

+ *                      multiple of 16

+ * @param[in] aad       buffer containing the authentication data

+ * @param[in] authtag   128 bits buffer for the generated authentication tag

+ * @return              The operation status.

+ * @retval CRY_NOERROR          if the operation succeeded.

+ * @retval CRY_ERR_INV_ALGO     if the operation is unsupported on this

+ *                              device instance.

+ * @retval CRY_ERR_INV_KEY_TYPE the selected key is invalid for this operation.

+ * @retval CRY_ERR_INV_KEY_ID   if the specified key identifier is invalid

+ *                              or refers and empty key slot.

+ *

+ * @notapi

+ */

+cryerror_t cry_lld_decrypt_AES_GCM(CRYDriver *cryp,

+                                   crykey_t key_id,

+                                   size_t size,

+                                   const uint8_t *in,

+                                   uint8_t *out,

+                                   const uint8_t *iv,

+                                   size_t aadsize,

+                                   const uint8_t *aad,

+                                   uint8_t *authtag) {

+

+  (void)cryp;

+  (void)key_id;

+  (void)size;

+  (void)in;

+  (void)out;

+  (void)iv;

+  (void)aadsize;

+  (void)aad;

+  (void)authtag;

+

+  return CRY_ERR_INV_ALGO;

 }

 

 #endif /* HAL_USE_CRY == TRUE */

diff --git a/os/hal/templates/hal_crypto_lld.h b/os/hal/templates/hal_crypto_lld.h
index 05aa5566d..eb139e4aa 100644
--- a/os/hal/templates/hal_crypto_lld.h
+++ b/os/hal/templates/hal_crypto_lld.h
@@ -39,6 +39,7 @@
 #define CRY_LLD_SUPPORTS_AES_CBC            TRUE

 #define CRY_LLD_SUPPORTS_AES_CFB            TRUE

 #define CRY_LLD_SUPPORTS_AES_CTR            TRUE

+#define CRY_LLD_SUPPORTS_AES_GCM            TRUE

 /** @{ */

 

 /*===========================================================================*/

@@ -178,15 +179,31 @@ extern "C" {
                                      size_t size,

                                      const uint8_t *in,

                                      uint8_t *out,

-                                     const uint8_t *nonce,

-                                     uint8_t *cnt);

+                                     const uint8_t *iv);

   cryerror_t cry_lld_decrypt_AES_CTR(CRYDriver *cryp,

                                      crykey_t key_id,

                                      size_t size,

                                      const uint8_t *in,

                                      uint8_t *out,

-                                     const uint8_t *nonce,

-                                     uint8_t *cnt);

+                                     const uint8_t *iv);

+  cryerror_t cry_lld_encrypt_AES_GCM(CRYDriver *cryp,

+                                     crykey_t key_id,

+                                     size_t size,

+                                     const uint8_t *in,

+                                     uint8_t *out,

+                                     const uint8_t *iv,

+                                     size_t aadsize,

+                                     const uint8_t *aad,

+                                     uint8_t *authtag);

+  cryerror_t cry_lld_decrypt_AES_GCM(CRYDriver *cryp,

+                                     crykey_t key_id,

+                                     size_t size,

+                                     const uint8_t *in,

+                                     uint8_t *out,

+                                     const uint8_t *iv,

+                                     size_t aadsize,

+                                     const uint8_t *aad,

+                                     uint8_t *authtag);

 #ifdef __cplusplus

 }

 #endif