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Struct std.digest.sha.SHA

Template API SHA1/SHA2 implementation. Supports: SHA-1, SHA-224, SHA-256, SHA-384, SHA-512, SHA-512/224 and SHA-512/256.

struct SHA(uint hashBlockSize, uint digestSize) ;

The hashBlockSize and digestSize are in bits. However, it's likely easier to simply use the convenience aliases: SHA1, SHA224, SHA256, SHA384, SHA512, SHA512_224 and SHA512_256.

See std.digest for differences between template and OOP API.

Methods

NameDescription
finish Returns the finished SHA hash. This also calls start to reset the internal state.
put Use this to feed the digest with data. Also implements the isOutputRange interface for ubyte and const(ubyte)[].
start SHA initialization. Begins an SHA1/SHA2 operation.

Example

//Simple example, hashing a string using sha1Of helper function
ubyte[20] hash = sha1Of("abc");
//Let's get a hash string
writeln(toHexString(hash)); // "A9993E364706816ABA3E25717850C26C9CD0D89D"

//The same, but using SHA-224
ubyte[28] hash224 = sha224Of("abc");
writeln(toHexString(hash224)); // "23097D223405D8228642A477BDA255B32AADBCE4BDA0B3F7E36C9DA7"

Example

//Using the basic API
SHA1 hash;
hash.start();
ubyte[1024] data;
//Initialize data here...
hash.put(data);
ubyte[20] result = hash.finish();

Example

//Let's use the template features:
//Note: When passing a SHA1 to a function, it must be passed by reference!
void doSomething(T)(ref T hash)
if (isDigest!T)
{
  hash.put(cast(ubyte) 0);
}
SHA1 sha;
sha.start();
doSomething(sha);
writeln(toHexString(sha.finish())); // "5BA93C9DB0CFF93F52B521D7420E43F6EDA2784F"

Authors

The routines and algorithms are derived from the Secure Hash Signature Standard (SHS) (FIPS PUB 180-2).
Kai Nacke, Johannes Pfau, Nick Sabalausky

License

Boost License 1.0.