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Questions - ecdsa

Verify Signature with a base64 public key NID_secp384r1 with openSSL

I am trying to verify a signature with openssl 1.1.1k, but I have trouble importing the DER-encoded SPKI formatted public key that I generated with SubtleCrypto Web Crypto API. Decoded public key with...
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Csuszmusz

c++

openssl

cryptography

ecdsa

Votes: 0

Answers: 1

Latest Answer

tryTwo() allows a successful verification of the posted data with the following changes: In addition to key and signature, the message itself is also required for verification. However, the message i...
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Topaco

Verifying signature created using OpenSSL with BearSSL

I am trying to verify a ECDSA signature created with OpenSSL on an embedded device using BearSSL. First I created a private key using OpenSSL and extracted the public key: $ openssl ecparam -name secp...
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Num Lock

c

openssl

cryptography

ecdsa

Votes: 0

Answers: 1

Latest Answer

The signature file contents shown as $ hexdump signature 0000000 4530 2002 ac54 51af 8ac0 cee8 dc74 4120 ... is displayed as 16-bit values. The signature in the C program is defined as an array of 8-...
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Bodo

Creating ECDSA keys with OpenSSL 3 (migration problem)

I need to create ECDSA keys and used old OpenSSL code until now, which dosn't compile any more under OpenSSL3, there are now lots of deprecation errors. I invested now several days with search & t...
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TheRealAlex

c++

openssl

migration

ecdsa

Votes: 0

Answers: 1

Latest Answer

WorkerThread.cpp(34,2): error C4996: 'ERR_load_BIO_strings': Since OpenSSL 3.0 You don't need to call any of those initialisation functions. Just remove them from your code. They are not needed with...
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Matt Caswell

Python ECDSA failing to verify signature

I am trying to verify a Bitcoin signature using ECDSA in python but finding it very hard, many attempts failed already. The params: address: 33ELcBdg6W7parjGxNYUz5uHVHwPqopNjE message: hzpPiNlB sign...
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2StepsFromHell

python

cryptography

bitcoin

ecdsa

Votes: 0

Answers: 1

Latest Answer

After extracting the pubkey by using the correct path, I can confirm that: verify = bitcoin.ecdsa_verify(message, signature, pub_key). is returning True.
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2StepsFromHell

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