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- This is the same test as ecdsa-prime256v1-sha512.pem, however the SIGNATURE has
- been changed to a (valid) BIT STRING containing two unused bits.
- Note that the last two bits of the original signature were 0, so the
- DER-encoded bytes portion of the mutated BIT STRING remains the same. All that
- changes is the octet at the start which indicates the number of unused bits.
- In other words SIGNATURE changes from:
- 03 47 00 30 ... 84
- To:
- 03 47 02 30 ... 84
- $ openssl asn1parse -i < [PUBLIC KEY]
- 0:d=0 hl=2 l= 89 cons: SEQUENCE
- 2:d=1 hl=2 l= 19 cons: SEQUENCE
- 4:d=2 hl=2 l= 7 prim: OBJECT :id-ecPublicKey
- 13:d=2 hl=2 l= 8 prim: OBJECT :prime256v1
- 23:d=1 hl=2 l= 66 prim: BIT STRING
- -----BEGIN PUBLIC KEY-----
- MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAEnLDPaTA9r8dh1ORoe07PA55tNKuWSvgIENjVWKS
- o1vctUSM6F4iSCobuCKGWLHnvoxf7eHnil9rSFG25lfoceA==
- -----END PUBLIC KEY-----
- $ openssl asn1parse -i < [ALGORITHM]
- 0:d=0 hl=2 l= 10 cons: SEQUENCE
- 2:d=1 hl=2 l= 8 prim: OBJECT :ecdsa-with-SHA512
- -----BEGIN ALGORITHM-----
- MAoGCCqGSM49BAME
- -----END ALGORITHM-----
- -----BEGIN DATA-----
- bikyFTMBpO72gOZCiSmtrpiMEI1mijH/VdBImUfXX/gaRr+J6E1kAfAjvm6HaI+814TXhcqEZzV
- SSstS0ARSyEBApHnnzDMJNkQdk7vnIqlDKm4dsRK1yUA7ECcssTR/1hnUY/ep0iOtdv3gbYpog1
- APuEMjWr/5jiQb37VTjD4=
- -----END DATA-----
- $ openssl asn1parse -i < [SIGNATURE]
- 0:d=0 hl=2 l= 71 prim: BIT STRING
- -----BEGIN SIGNATURE-----
- A0cCMEQCIEufkeQoUocmGh0ckjz2Gc1SwXXP5/G+YKUljGEDSLo9AiAoxF+QHXHEGymGOOwNaoX
- X/LDDO7/sWpyBCEa2OSiahA==
- -----END SIGNATURE-----
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