HMAC SHA-1 to Match RFC 2022 Test Vectors

Demonstrates using Chilkat in SQL Server to computer HMAC SHA-1 message authentication codes to match the test vectors given by RFC 2202.

Download Chilkat Crypt ActiveX

CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    DECLARE @crypt int
    EXEC @hr = sp_OACreate 'Chilkat.Crypt2', @crypt OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    --  Any string argument automatically begins the 30-day trial.
    DECLARE @success int

    EXEC sp_OAMethod @crypt, 'UnlockComponent', @success OUT, '30-day trial'
    IF @success <> 1
      BEGIN
        PRINT 'Crypt component unlock failed'
        RETURN
      END

    --  The output will be Hex, so set the EncodingMode:
    EXEC sp_OASetProperty @crypt, 'EncodingMode', 'hex'

    --  Set the hash algorithm:
    --  Choices are: md5, sha-1, sha256, sha384, sha512, md2, haval
    EXEC sp_OASetProperty @crypt, 'HashAlgorithm', 'sha-1'

    DECLARE @mac nvarchar(4000)

    --  Set the HMAC key:
    EXEC sp_OAMethod @crypt, 'SetHmacKeyEncoded', NULL, '0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b', 'hex'
    EXEC sp_OAMethod @crypt, 'HmacStringENC', @mac OUT, 'Hi There'

    PRINT @mac

    EXEC sp_OAMethod @crypt, 'SetHmacKeyEncoded', NULL, 'Jefe', 'us-ascii'
    EXEC sp_OAMethod @crypt, 'HmacStringENC', @mac OUT, 'what do ya want for nothing?'

    PRINT @mac


END
GO