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Save work on unit tests for crypto. RC4 and AES are having trouble for some reason...

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This commit is contained in:
Michael R Sweet
2021-10-12 17:11:10 -04:00
parent c24243a2bc
commit 493fbca31c
4 changed files with 236 additions and 5 deletions
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13
pdfio-file.c
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@ -1077,7 +1077,7 @@ pdfioFileSetPermissions(
if (!pdf)
return (false);
if (pdf->num_objs > 0)
if (pdf->num_objs > 2) // First two objects are pages and info
{
_pdfioFileError(pdf, "You must call pdfioFileSetPermissions before adding any objects.");
return (false);
@ -1099,7 +1099,7 @@ pdfioFileSetPermissions(
case PDFIO_ENCRYPTION_RC4_128 :
case PDFIO_ENCRYPTION_AES_128 :
// Create the 128-bit encryption keys...
if (user_password)
if (user_password && *user_password)
{
// Copy the user password and pad it with the special PDF pad bytes
if ((len = strlen(user_password)) > sizeof(user_pad))
@ -1127,11 +1127,16 @@ pdfioFileSetPermissions(
if (len < sizeof(owner_pad))
memcpy(owner_pad + len, pad, sizeof(owner_pad) - len);
}
else
else if (user_password && *user_password)
{
// Generate a random owner password...
_pdfioCryptoMakeRandom(owner_pad, sizeof(owner_pad));
}
else
{
// Use default (pad) password
memcpy(owner_pad, pad, sizeof(owner_pad));
}
// Compute the owner key...
_pdfioCryptoMD5Init(&md5);
@ -1212,7 +1217,7 @@ pdfioFileSetPermissions(
pdfioDictSetBinary(dict, "O", pdf->owner_key, sizeof(pdf->owner_key));
pdfioDictSetNumber(dict, "P", (int)permissions);
pdfioDictSetNumber(dict, "R", encryption == PDFIO_ENCRYPTION_RC4_128 ? 3 : 4);
pdfioDictSetNumber(dict, "V", encryption == PDFIO_ENCRYPTION_RC4_128 ? 3 : 4);
pdfioDictSetNumber(dict, "V", encryption == PDFIO_ENCRYPTION_RC4_128 ? 2 : 4);
pdfioDictSetBinary(dict, "U", pdf->user_key, sizeof(pdf->user_key));
break;