Merge pull request #5077 from EOSIO/update_crypto_h

update crypto.h to use const char*

contracts/eosiolib/crypto.h

@@ -42,7 +42,7 @@ extern "C" {
  *  eosio::print("sha256 hash generated from data equals provided hash");
  *  @endcode
  */
-void assert_sha256( char* data, uint32_t length, const checksum256* hash );
+void assert_sha256( const char* data, uint32_t length, const checksum256* hash );
 
 /**
  *  Tests if the sha1 hash generated from data matches the provided checksum.
@@ -67,7 +67,7 @@ void assert_sha256( char* data, uint32_t length, const checksum256* hash );
  *  eosio::print("sha1 hash generated from data equals provided hash");
  *  @endcode
  */
-void assert_sha1( char* data, uint32_t length, const checksum160* hash );
+void assert_sha1( const char* data, uint32_t length, const checksum160* hash );
 
 /**
  *  Tests if the sha512 hash generated from data matches the provided checksum.
@@ -92,7 +92,7 @@ void assert_sha1( char* data, uint32_t length, const checksum160* hash );
  *  eosio::print("sha512 hash generated from data equals provided hash");
  *  @endcode
  */
-void assert_sha512( char* data, uint32_t length, const checksum512* hash );
+void assert_sha512( const char* data, uint32_t length, const checksum512* hash );
 
 /**
  *  Tests if the ripemod160 hash generated from data matches the provided checksum.
@@ -116,7 +116,7 @@ void assert_sha512( char* data, uint32_t length, const checksum512* hash );
  *  eosio::print("ripemod160 hash generated from data equals provided hash");
  *  @endcode
  */
-void assert_ripemd160( char* data, uint32_t length, const checksum160* hash );
+void assert_ripemd160( const char* data, uint32_t length, const checksum160* hash );
 
 /**
  *  Hashes `data` using `sha256` and stores result in memory pointed to by hash.
@@ -134,7 +134,7 @@ void assert_ripemd160( char* data, uint32_t length, const checksum160* hash );
  *  eos_assert( calc_hash == hash, "invalid hash" );
  *  @endcode
  */
-void sha256( char* data, uint32_t length, checksum256* hash );
+void sha256( const char* data, uint32_t length, checksum256* hash );
 
 /**
  *  Hashes `data` using `sha1` and stores result in memory pointed to by hash.
@@ -152,7 +152,7 @@ void sha256( char* data, uint32_t length, checksum256* hash );
  *  eos_assert( calc_hash == hash, "invalid hash" );
  *  @endcode
  */
-void sha1( char* data, uint32_t length, checksum160* hash );
+void sha1( const char* data, uint32_t length, checksum160* hash );
 
 /**
  *  Hashes `data` using `sha512` and stores result in memory pointed to by hash.
@@ -170,7 +170,7 @@ void sha1( char* data, uint32_t length, checksum160* hash );
  *  eos_assert( calc_hash == hash, "invalid hash" );
  *  @endcode
  */
-void sha512( char* data, uint32_t length, checksum512* hash );
+void sha512( const char* data, uint32_t length, checksum512* hash );
 
 /**
  *  Hashes `data` using `ripemod160` and stores result in memory pointed to by hash.
@@ -188,7 +188,7 @@ void sha512( char* data, uint32_t length, checksum512* hash );
  *  eos_assert( calc_hash == hash, "invalid hash" );
  *  @endcode
  */
-void ripemd160( char* data, uint32_t length, checksum160* hash );
+void ripemd160( const char* data, uint32_t length, checksum160* hash );
 
 /**
  *  Calculates the public key used for a given signature and hash used to create a message.