1This is the same as ecdsa-prime256v1-sha512.pem, except the signature is wrong.
2
3Rather than encoding the signature into a DER-encoded Ecdsa-Sig-Value, it is a
4concatenation of the r and s values. This is the format that WebCrypto uses for
5ECDSA signature, but not what is used for digital signatures.
6
7
8$ openssl asn1parse -i < [PUBLIC KEY]
9    0:d=0  hl=2 l=  89 cons: SEQUENCE
10    2:d=1  hl=2 l=  19 cons:  SEQUENCE
11    4:d=2  hl=2 l=   7 prim:   OBJECT            :id-ecPublicKey
12   13:d=2  hl=2 l=   8 prim:   OBJECT            :prime256v1
13   23:d=1  hl=2 l=  66 prim:  BIT STRING
14-----BEGIN PUBLIC KEY-----
15MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAEnLDPaTA9r8dh1ORoe07PA55tNKuWSvgIENjVWKS
16o1vctUSM6F4iSCobuCKGWLHnvoxf7eHnil9rSFG25lfoceA==
17-----END PUBLIC KEY-----
18
19$ openssl asn1parse -i < [ALGORITHM]
20    0:d=0  hl=2 l=  10 cons: SEQUENCE
21    2:d=1  hl=2 l=   8 prim:  OBJECT            :ecdsa-with-SHA512
22-----BEGIN ALGORITHM-----
23MAoGCCqGSM49BAME
24-----END ALGORITHM-----
25
26-----BEGIN DATA-----
27bikyFTMBpO72gOZCiSmtrpiMEI1mijH/VdBImUfXX/gaRr+J6E1kAfAjvm6HaI+814TXhcqEZzV
28SSstS0ARSyEBApHnnzDMJNkQdk7vnIqlDKm4dsRK1yUA7ECcssTR/1hnUY/ep0iOtdv3gbYpog1
29APuEMjWr/5jiQb37VTjD4=
30-----END DATA-----
31
32$ openssl asn1parse -i < [SIGNATURE]
33    0:d=0  hl=2 l=  65 prim: BIT STRING
34-----BEGIN SIGNATURE-----
35A0EAS5+R5ChShyYaHRySPPYZzVLBdc/n8b5gpSWMYQNIuj0oxF+QHXHEGymGOOwNaoXX/LDDO7/
36sWpyBCEa2OSiahA==
37-----END SIGNATURE-----
38