diff options
| -rw-r--r-- | scripts/rpki/x509.py | 31 |
1 files changed, 30 insertions, 1 deletions
diff --git a/scripts/rpki/x509.py b/scripts/rpki/x509.py index 88e70308..d285ab9d 100644 --- a/scripts/rpki/x509.py +++ b/scripts/rpki/x509.py @@ -11,7 +11,7 @@ bring together the functionality I need in a way that hides at least some of the nasty details. This involves a lot of format conversion. """ -import POW, tlslite.api, POW.pkix +import POW, tlslite.api, POW.pkix, base64 class X509(object): """ @@ -147,3 +147,32 @@ def sort_chain(bag): bag.remove(cert) return chain + +def _pem_delimiters(type): + return ("-----BEGIN %s-----" % type, + "-----END %s-----" % type) + +def pem2der(pem, type): + """ + Generic PEM -> DER converter. Second argument is type of PEM text + to be converted ("CERTIFICATE", "RSA PRIVATE KEY", etc). + """ + + bdelim, edelim = _pem_delimiters(type) + lines = pem.splitlines(0) + assert lines[0] == bdelim and lines[-1] == edelim + return base64.b64decode("".join(lines[1:-2])) + +def der2pem(der, type): + """ + Generic DER -> PEM converter. Second argument is type of PEM text + to be converted ("CERTIFICATE", "RSA PRIVATE KEY", etc). + """ + + bdelim, edelim = _pem_delimiters(type) + b64 = base64.b64enode(der) + pem = bdelim + while len(b64) > 64: + pem += b64[0:63] + "\n" + b64 = b64[64:] + return pem + b64 + "\n" + edelim + "\n" |