import base64
from cryptography import x509
from cryptography.hazmat.backends import default_backend

# base64 string here
b64_data = "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"

# decode full base64
binary_data = base64.b64decode(b64_data)

# Attempt to parse certificates
certs = []
while binary_data:
    try:
        cert = x509.load_der_x509_certificate(binary_data, default_backend())

        # Print certificate details
        print("Subject:", cert.subject)
        print("Issuer:", cert.issuer)
        print("Serial Number:", cert.serial_number)
        print("Not valid before:", cert.not_valid_before)
        print("Not valid after:", cert.not_valid_after)
        print("Signature Algorithm:", cert.signature_algorithm_oid._name)
        print("Public Key:", cert.public_key())
        print("\nExtensions:")
        for ext in cert.extensions:
            print(f"- {ext.oid._name}: {ext.value}")

        certs.append(cert)
        binary_data = binary_data[len(cert.public_bytes(encoding=x509.Encoding.DER)):]
    except Exception:
        break

print(f"Found {len(certs)} certificates.")