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ECDSA operations fails #261

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jingkang99 opened this issue Oct 27, 2022 · 1 comment
Open

ECDSA operations fails #261

jingkang99 opened this issue Oct 27, 2022 · 1 comment

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@jingkang99
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creates an ECDSA key using the TPM, signs a data file using the TPM and validates the signature:

tpm2tss-genkey -a ecdsa mykey
OK

openssl pkeyutl -engine tpm2tss -keyform engine -inkey mykey -sign -in mydata -out mysig
engine "tpm2tss" set.
Public Key operation error
140354988619072:error:8007806B:tpm2-tss-engine:ecdsa_sign:Unknown padding scheme requested:src/tpm2-tss-engine-ecc.c:374:
140354988619072:error:8007406F:tpm2-tss-engine:esys_ctx_free:Some unknown error occurred:src/tpm2-tss-engine-common.c:106:

cat mykey

-----BEGIN TSS2 PRIVATE KEY-----
MIHwBgZngQUKAQOgAwEB/wIEQAAAAQRYAFYAIwALAAQEcgAAABAAEAADABAAIJHe
XjpJJKTrljljplP8NPh5CKZ6EKVJ1sfAg9R32sF2ACDoGKhJO/bqlnh0wbzcaboG
xM88611ygDykygksLdfuiASBgAB+ACDRA99DXQ6ndEbXTrl3arAkrtAyPSZeH9F8
gHQd9Juz2gAQmYWAEacFreB2AKGL5DivZNUVl8jiiP9lLwn1EO7jlEelb6eySEgl
LTNJlEAY0kmxFGv8q4+7Xa9ksPKmI7owM7oDx+llIULzMB2Ps3rDYBUhra1b6HpE
4l4g
@AndreasFuchsTPM
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This is weird.
P.S. the key you posted is incomplete. Would you mind sending the complete key so I can decode it and have a look ?

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@AndreasFuchsTPM @jingkang99