Collaborate Disseminate
I came across a PGP public key that seems invalid. The key is a secp256k1 public key that supported by GPG. In fact, GPG allows importing that key even if it has an invalid secp256k1 public key inside.
Running –list-packets on the key sho… Continue reading GPG allows importing an invalid secp256k1 public key
I have this issue moving some code from python to java.
The following public key:
MDkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDIgAC2X07fCab+nIPAWBb5eRlhdOfR0Bkrhx7TgM3cGbR31g=
can be succesfully read from this python code:
key = bytearray.fromhex(
… Continue reading Read EC Public Key, works in python, error in java [migrated]
I’m doing a spin-off request from this: EC Key request
As my problem is a bit different but similar.
I have the following private key (in this format, not a file):
MHcCAQEEID0VR/I814rQUqWIYPEhno+3kexN/jN2n1ub+mJ6ZWyhoAoGCCqGSM49AwEHoUQDQgA… Continue reading Parsing and loading EC Private key, curve secp256r1 [migrated]
When I run the command btc_address_dump "0x0000000000000000000000000000000000000000000000000000000000000001" the outputed public key is 0479be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798483ada7726a3c4655da4fbfc0e1… Continue reading How to generate public key from private key in python3 with out importing any module [migrated]
Firstly is it possible to determine which of the calculation/equation was performed last to derived the values of x and y of the public key?
The calculation used in deriving the public key from the private key involves the following steps:… Continue reading Can the private key be derived from the public key [duplicate]
I came across two ways of generating an ECC private key. Both create the key in pkcs8 format.
Only the 2nd variant results in a pkcs8 file that contains the eccPublicKey OID 1.2.840.10045.2.1.
Why do these two ways of generating the pkcs8 … Continue reading Difference in OpenSSL pkcs8 key generation
I’am trying to get a feel for Elliptic Curve Cryptography. I wrote a small Python program below to generate key material but I don’t get the same result for y_squared and Q.y^2. I’am using the parameters from 256-Bit Random ECP Group (RFC … Continue reading Elliptic Curve Cryptography Key Verification fails [migrated]
I’am trying to get a feel for Elliptic Curve Cryptography. I wrote a small Python program below to generate key material but I don’t get the same result for y_squared and Q.y^2. I’am using the parameters from 256-Bit Random ECP Group (RFC … Continue reading Elliptic Curve Cryptography Key Verification fails [migrated]
My understanding is that an ED25519-sk SSH key generated by OpenSSH generates a private key stub that lives on your host machine. This stub is just a reference to the actual private key that lives on the actual hardware key itself.
My unde… Continue reading Can someone with access to only my Yubikey gain access to my server that has SSH access via an ED25519-sk keypair?
Having issue with x509 certificate verification.
Steps I followed.
Generated the root certificate.
created the Intermediate certificate.
signed the Intermediate certificate with root certificate.
Signing was success.
verification failed…. Continue reading x509 certificate verification issue