e-CryptIt Engine Xojo Plugin |

# SHA_512 Class (console safe)

SHA_512 is a message digest/hash algorithm with a digest/hash size of 512 bits (64 characters).
This algorithm has been tested against official test vectors.

Object
SHA_512

class SHA_512 implements

IHashAlgorithm

#### Methods

Final (console safe) | Use this function when you are done adding bytes to the SHA_512 class.
shared Hash | Convenience shared function to hash small data with just one line of code without creating instance of the class.
Update (console safe) | Use this method to add data with MemoryBlock to the SHA_512 stream.
Update (console safe) | Use this method to add data with String to the SHA_512 stream.

#### Test case for a known test vector

Dim data as String
Dim hash as SHA_512
Dim result as String
Dim hexResult as String
Dim i as Integer
data = "abc"
// We do this in ASCII because the well known test vectors come in ASCII
data = ConvertEncoding(data,Encodings.ASCII)
hash = new SHA_512()
hash.Update(data)
result = hash.Final()
// Convert to HEX
For i = 1 to 64
hexResult = hexResult + Right("0"+Hex(Asc(Mid(result,i,1))),2)
next
if hexResult <> Uppercase("ddaf35a193617abacc417349ae20413112e6fa4e89a97ea20a9eeee64b55d39a2192992a274fc1a836ba3c23a3feebbd454d4423643ce80e2a9ac94fa54ca49f") then
return false
end if
// Lets test another official vector
data = "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq"
// We do this in ASCII because the well known test vectors come in ASCII
data = ConvertEncoding(data,Encodings.ASCII)
hash = new SHA_512()
hash.Update(data)
result = hash.Final()
hexResult = ""
// Convert to HEX
For i = 1 to 64
hexResult = hexResult + Right("0"+Hex(Asc(Mid(result,i,1))),2)
next
if hexResult = Uppercase("204a8fc6dda82f0a0ced7beb8e08a41657c16ef468b228a8279be331a703c33596fd15c13b1b07f9aa1d3bea57789ca031ad85c7a71dd70354ec631238ca3445") then
return true
else
return false
end if

#### Supported Platforms:

- macOS Intel 64 bit
- macOS Apple Silicon
- Windows 32 bit
- Windows 64 bit
- Windows ARM 64 bit
- Linux 32 bit
- Linux 64 bit
- Linux ARM 32 bit
- Linux ARM 64 bit
- iOS