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  3. YubiHSM2
  4. Commands
  5. Get Public Key

    GET PUBLIC KEY

    Fetch a public key from device.

    Description

    Fetch the public key of an Asymmetric Key.

    Shell Example

    Fetch the public key of Asymmetric Key 0x2846:

    yubihsm> get pubkey 0 0x2846
-----BEGIN PUBLIC KEY-----
MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAE85fayPHTvCrv0RRcyCsHv0hTKAM7
xHiU2I3NgO61RTRQumGDeBnQZIITykK/0PWKLGDANfBVrmKkWWxB47ze9A==
-----END PUBLIC KEY-----

    Protocol Details

    Command

    Tc = 0x54

    Lc = 2

    Vc = I

    I := Object ID of the Asymmetric Key (2 bytes)

    Response

    Tr = 0xd4

    Lr = 1 + LP1 { + LP2 }

    Vr = A || P1 { || P2 }

    A := Algorithm (1 byte)

    P1 :=

    For RSA: Public modulus N (256, 384 or 512 bytes)

    For ECC: Public point X (32, 48, 64 or 66 bytes)

    For EDC: Public point A, compressed (32 bytes)

    P2 :=

    For RSA: NOT DEFINED

    For ECC: Public point Y (32, 48, 64 or 66 bytes)

    For EDC: NOT DEFINED