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(SQL Server) Get PuTTY Public Key from Private PPK

Demonstrates how to get a PuTTY public key from the PPK private key.

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

-- Important: See this note about string length limitations for strings returned by sp_OAMethod calls.
--
CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    -- Important: Do not use nvarchar(max).  See the warning about using nvarchar(max).
    DECLARE @sTmp0 nvarchar(4000)
    -- Load a .ppk PuTTY private key.
    DECLARE @puttyKey int
    -- Use "Chilkat_9_5_0.SshKey" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.SshKey', @puttyKey OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    DECLARE @ppkText nvarchar(4000)
    EXEC sp_OAMethod @puttyKey, 'LoadText', @ppkText OUT, 'qa_data/ppk/putty_private_secret.ppk'

    -- The ppkText contains this content:

    -- 	PuTTY-User-Key-File-2: ssh-rsa
    -- 	Encryption: aes256-cbc
    -- 	Comment: rsa-key-20170126
    -- 	Public-Lines: 6
    -- 	AAAAB3NzaC1yc2EAAAABJQAAAQEAx+52s7vvaZ8rT2UdFZWlSUVDHDQ+5ZRFvgRW
    -- 	6nm2sO1c9WqNg7u2PQL4jeKSDX2XWcMnpleALz2x8Rr4rMy5E1iZzvWov8VtFd8l
    -- 	fa9HOkgEeJB3VFuYR3NlnD3eyCoYJYPVpHJHrIeui2WZs5vQ76HDe+th8+z5Ald4
    -- 	zPw3p2c6ZJpBrkSBM67hWokoBDi23c7NhszDHhJBrv+B98cQxnagI1PUKqN7E8Vg
    -- 	bNtBI8beIMHyI69up9G1AXSEi0cGIjYNx9RNUPau1mRk/SvfqxgWkAjM005lj7hc
    -- 	bOsjbdKK3T2NtrKTaYjEiXlEXcj1iGuApsD/m73pYaEJB3Nd7w==
    -- 	Private-Lines: 14
    -- 	MoaDbq0owouN/7Z9Pga0favDhM2bSEgMErJBxdDmNUXIVVcUoLiD/Ps1RA+BeBBX
    -- 	wxqKUt9PqLy/pnafPR/i2xjJiQtQ0CWkPxND16Gi1dqLzmbQYYl1ev4+LzuG0zNX
    -- 	HDGMvRiwagY7mY+F1tUjBYfOL6z8XHw4m40YcY1QorOO+0MMzAVT5Hkg8YyXW209
    -- 	B/V/LRADFMVA2BlL39y11cb5ZpFStPH/waYUMY+2w1ZmJZ7dcRoMjuKmY+YE/tUx
    -- 	n9X3P0qTNSbw6e6sMG3Dhr1vfoJUQWApUliD6GpUiCeIvXBcVqG8Vsfq9XADsPl0
    -- 	+nFAwjSZflywcB7/FwhGb7q5UmcJK06SzoMl7Og5e3g7NCs3yNNQIv+qCpDjhxrA
    -- 	hpT03mbipu7OXCZDeUwUhMGJAmYHE5iqm1rPCsSVbaMgpxhCWf01Cx4gLx3aMvn4
    -- 	MdylA31GuL3wSxcWTslrOI8+449lZN/qZEnGEZkYTrnlu123jTqsAWMMtuHSz2Ig
    -- 	6GA89oTdlppkNflhNH3OJ85kMUrc3p/ZBMdndz8jTDTljmJjHR5oNMoShFof115A
    -- 	nWjUHqBwCgcubLYyH3afDvBTOhtl0tJ9Oby0wJlOAGnCXiPSDbF/y7J7xml/PS9t
    -- 	XlSVNxtAY15NDO6Fp96sBVfKuJsfJ90PzdBom4ikIuf7sMwtElrHHLuYfcXJQYLp
    -- 	G5jBmqDgnirosVPEBIxlxFzz/HCRmdU+tsYg46gqI4R5UpKUe8WSaJoZkDGsrqhm
    -- 	e+1SJaBuafR4v2bx/bV414Hg7LGQosK2S3crxH4UgZl+g02vWznZfBH+9CmHvKDR
    -- 	AxfcKOTzsaILKJtQPV81lmJ45sARYMcB5jMiE4kBg56hiXouChsvKkm55WVcW1E+
    -- 	Private-MAC: 17512c9f7582c1d9c3ae2b01b4d67a6b1dbd1d0e

    -- "secret" is the actual password for the above PPK.
    EXEC sp_OASetProperty @puttyKey, 'Password', 'secret'
    DECLARE @success int
    EXEC sp_OAMethod @puttyKey, 'FromPuttyPrivateKey', @success OUT, @ppkText
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @puttyKey, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @puttyKey
        RETURN
      END

    -- There are two common SSH public key formats.
    -- This example will convert to both.

    -- 1) Convert to an OpenSSH public key
    -- 
    DECLARE @strPubKey1 nvarchar(4000)
    EXEC sp_OAMethod @puttyKey, 'ToOpenSshPublicKey', @strPubKey1 OUT

    PRINT @strPubKey1

    -- strPubKey1 contains:
    -- 
    -- ssh-rsa AAAAB3NzaC1yc2EAAAABJQAAAQEAx+52s7vvaZ8rT2UdFZWlSUVDHDQ+5ZRFvgRW6nm2sO1c9WqNg7u2PQL4jeKSDX2XWcMnpleALz2x8Rr4rMy5E1iZzvWov8VtFd8lfa9HOkgEeJB3VFuYR3NlnD3eyCoYJYPVpHJHrIeui2WZs5vQ76HDe+th8+z5Ald4zPw3p2c6ZJpBrkSBM67hWokoBDi23c7NhszDHhJBrv+B98cQxnagI1PUKqN7E8VgbNtBI8beIMHyI69up9G1AXSEi0cGIjYNx9RNUPau1mRk/SvfqxgWkAjM005lj7hcbOsjbdKK3T2NtrKTaYjEiXlEXcj1iGuApsD/m73pYaEJB3Nd7w== rsa-key-20170126

    -- 2) Convert to an RFC 4716 SSH public key PEM
    -- 
    DECLARE @strPubKey2 nvarchar(4000)
    EXEC sp_OAMethod @puttyKey, 'ToRfc4716PublicKey', @strPubKey2 OUT

    PRINT @strPubKey2

    -- strPubKey2 contains:
    -- 
    -- ---- BEGIN SSH2 PUBLIC KEY ----
    -- Comment: "rsa-key-20170126"
    -- AAAAB3NzaC1yc2EAAAABJQAAAQEAx+52s7vvaZ8rT2UdFZWlSUVDHDQ+5ZRFvgRW
    -- 6nm2sO1c9WqNg7u2PQL4jeKSDX2XWcMnpleALz2x8Rr4rMy5E1iZzvWov8VtFd8l
    -- fa9HOkgEeJB3VFuYR3NlnD3eyCoYJYPVpHJHrIeui2WZs5vQ76HDe+th8+z5Ald4
    -- zPw3p2c6ZJpBrkSBM67hWokoBDi23c7NhszDHhJBrv+B98cQxnagI1PUKqN7E8Vg
    -- bNtBI8beIMHyI69up9G1AXSEi0cGIjYNx9RNUPau1mRk/SvfqxgWkAjM005lj7hc
    -- bOsjbdKK3T2NtrKTaYjEiXlEXcj1iGuApsD/m73pYaEJB3Nd7w==
    -- ---- END SSH2 PUBLIC KEY ----

    EXEC @hr = sp_OADestroy @puttyKey


END
GO

 

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