security/nss/lib/pkcs7/secmime.h@b8a032363ba2 (annotated)
security/nss/lib/pkcs7/secmime.h
Thu, 22 Jan 2015 13:21:57 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 22 Jan 2015 13:21:57 +0100
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
- permissions
- -rw-r--r--
Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6
| michael@0 | 1 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 2 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 3 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 4 | |
| michael@0 | 5 | /* |
| michael@0 | 6 | * Header file for routines specific to S/MIME. Keep things that are pure |
| michael@0 | 7 | * pkcs7 out of here; this is for S/MIME policy, S/MIME interoperability, etc. |
| michael@0 | 8 | */ |
| michael@0 | 9 | |
| michael@0 | 10 | #ifndef _SECMIME_H_ |
| michael@0 | 11 | #define _SECMIME_H_ 1 |
| michael@0 | 12 | |
| michael@0 | 13 | #include "secpkcs7.h" |
| michael@0 | 14 | |
| michael@0 | 15 | |
| michael@0 | 16 | /************************************************************************/ |
| michael@0 | 17 | SEC_BEGIN_PROTOS |
| michael@0 | 18 | |
| michael@0 | 19 | /* |
| michael@0 | 20 | * Initialize the local recording of the user S/MIME cipher preferences. |
| michael@0 | 21 | * This function is called once for each cipher, the order being |
| michael@0 | 22 | * important (first call records greatest preference, and so on). |
| michael@0 | 23 | * When finished, it is called with a "which" of CIPHER_FAMILID_MASK. |
| michael@0 | 24 | * If the function is called again after that, it is assumed that |
| michael@0 | 25 | * the preferences are being reset, and the old preferences are |
| michael@0 | 26 | * discarded. |
| michael@0 | 27 | * |
| michael@0 | 28 | * XXX This is for a particular user, and right now the storage is |
| michael@0 | 29 | * XXX local, static. The preference should be stored elsewhere to allow |
| michael@0 | 30 | * XXX for multiple uses of one library? How does SSL handle this; |
| michael@0 | 31 | * XXX it has something similar? |
| michael@0 | 32 | * |
| michael@0 | 33 | * - The "which" values are defined in ciferfam.h (the SMIME_* values, |
| michael@0 | 34 | * for example SMIME_DES_CBC_56). |
| michael@0 | 35 | * - If "on" is non-zero then the named cipher is enabled, otherwise |
| michael@0 | 36 | * it is disabled. (It is not necessary to call the function for |
| michael@0 | 37 | * ciphers that are disabled, however, as that is the default.) |
| michael@0 | 38 | * |
| michael@0 | 39 | * If the cipher preference is successfully recorded, SECSuccess |
| michael@0 | 40 | * is returned. Otherwise SECFailure is returned. The only errors |
| michael@0 | 41 | * are due to failure allocating memory or bad parameters/calls: |
| michael@0 | 42 | * SEC_ERROR_XXX ("which" is not in the S/MIME cipher family) |
| michael@0 | 43 | * SEC_ERROR_XXX (function is being called more times than there |
| michael@0 | 44 | * are known/expected ciphers) |
| michael@0 | 45 | */ |
| michael@0 | 46 | extern SECStatus SECMIME_EnableCipher(long which, int on); |
| michael@0 | 47 | |
| michael@0 | 48 | /* |
| michael@0 | 49 | * Initialize the local recording of the S/MIME policy. |
| michael@0 | 50 | * This function is called to enable/disable a particular cipher. |
| michael@0 | 51 | * (S/MIME encryption or decryption using a particular cipher is only |
| michael@0 | 52 | * allowed if that cipher is currently enabled.) At startup, all S/MIME |
| michael@0 | 53 | * ciphers are disabled. From that point, this function can be called |
| michael@0 | 54 | * to enable a cipher -- it is not necessary to call this to disable |
| michael@0 | 55 | * a cipher unless that cipher was previously, explicitly enabled via |
| michael@0 | 56 | * this function. |
| michael@0 | 57 | * |
| michael@0 | 58 | * XXX This is for a the current module, I think, so local, static storage |
| michael@0 | 59 | * XXX is okay. Is that correct, or could multiple uses of the same |
| michael@0 | 60 | * XXX library expect to operate under different policies? |
| michael@0 | 61 | * |
| michael@0 | 62 | * - The "which" values are defined in ciferfam.h (the SMIME_* values, |
| michael@0 | 63 | * for example SMIME_DES_CBC_56). |
| michael@0 | 64 | * - If "on" is non-zero then the named cipher is enabled, otherwise |
| michael@0 | 65 | * it is disabled. |
| michael@0 | 66 | * |
| michael@0 | 67 | * If the cipher is successfully enabled/disabled, SECSuccess is |
| michael@0 | 68 | * returned. Otherwise SECFailure is returned. The only errors |
| michael@0 | 69 | * are due to bad parameters: |
| michael@0 | 70 | * SEC_ERROR_XXX ("which" is not in the S/MIME cipher family) |
| michael@0 | 71 | * SEC_ERROR_XXX ("which" exceeds expected maximum cipher; this is |
| michael@0 | 72 | * really an internal error) |
| michael@0 | 73 | */ |
| michael@0 | 74 | extern SECStatus SECMIME_SetPolicy(long which, int on); |
| michael@0 | 75 | |
| michael@0 | 76 | /* |
| michael@0 | 77 | * Does the current policy allow S/MIME decryption of this particular |
| michael@0 | 78 | * algorithm and keysize? |
| michael@0 | 79 | */ |
| michael@0 | 80 | extern PRBool SECMIME_DecryptionAllowed(SECAlgorithmID *algid, PK11SymKey *key); |
| michael@0 | 81 | |
| michael@0 | 82 | /* |
| michael@0 | 83 | * Does the current policy allow *any* S/MIME encryption (or decryption)? |
| michael@0 | 84 | * |
| michael@0 | 85 | * This tells whether or not *any* S/MIME encryption can be done, |
| michael@0 | 86 | * according to policy. Callers may use this to do nicer user interface |
| michael@0 | 87 | * (say, greying out a checkbox so a user does not even try to encrypt |
| michael@0 | 88 | * a message when they are not allowed to) or for any reason they want |
| michael@0 | 89 | * to check whether S/MIME encryption (or decryption, for that matter) |
| michael@0 | 90 | * may be done. |
| michael@0 | 91 | * |
| michael@0 | 92 | * It takes no arguments. The return value is a simple boolean: |
| michael@0 | 93 | * PR_TRUE means encryption (or decryption) is *possible* |
| michael@0 | 94 | * (but may still fail due to other reasons, like because we cannot |
| michael@0 | 95 | * find all the necessary certs, etc.; PR_TRUE is *not* a guarantee) |
| michael@0 | 96 | * PR_FALSE means encryption (or decryption) is not permitted |
| michael@0 | 97 | * |
| michael@0 | 98 | * There are no errors from this routine. |
| michael@0 | 99 | */ |
| michael@0 | 100 | extern PRBool SECMIME_EncryptionPossible(void); |
| michael@0 | 101 | |
| michael@0 | 102 | /* |
| michael@0 | 103 | * Start an S/MIME encrypting context. |
| michael@0 | 104 | * |
| michael@0 | 105 | * "scert" is the cert for the sender. It will be checked for validity. |
| michael@0 | 106 | * "rcerts" are the certs for the recipients. They will also be checked. |
| michael@0 | 107 | * |
| michael@0 | 108 | * "certdb" is the cert database to use for verifying the certs. |
| michael@0 | 109 | * It can be NULL if a default database is available (like in the client). |
| michael@0 | 110 | * |
| michael@0 | 111 | * This function already does all of the stuff specific to S/MIME protocol |
| michael@0 | 112 | * and local policy; the return value just needs to be passed to |
| michael@0 | 113 | * SEC_PKCS7Encode() or to SEC_PKCS7EncoderStart() to create the encoded data, |
| michael@0 | 114 | * and finally to SEC_PKCS7DestroyContentInfo(). |
| michael@0 | 115 | * |
| michael@0 | 116 | * An error results in a return value of NULL and an error set. |
| michael@0 | 117 | * (Retrieve specific errors via PORT_GetError()/XP_GetError().) |
| michael@0 | 118 | */ |
| michael@0 | 119 | extern SEC_PKCS7ContentInfo *SECMIME_CreateEncrypted(CERTCertificate *scert, |
| michael@0 | 120 | CERTCertificate **rcerts, |
| michael@0 | 121 | CERTCertDBHandle *certdb, |
| michael@0 | 122 | SECKEYGetPasswordKey pwfn, |
| michael@0 | 123 | void *pwfn_arg); |
| michael@0 | 124 | |
| michael@0 | 125 | /* |
| michael@0 | 126 | * Start an S/MIME signing context. |
| michael@0 | 127 | * |
| michael@0 | 128 | * "scert" is the cert that will be used to sign the data. It will be |
| michael@0 | 129 | * checked for validity. |
| michael@0 | 130 | * |
| michael@0 | 131 | * "certdb" is the cert database to use for verifying the cert. |
| michael@0 | 132 | * It can be NULL if a default database is available (like in the client). |
| michael@0 | 133 | * |
| michael@0 | 134 | * "digestalg" names the digest algorithm. (It should be SEC_OID_SHA1; |
| michael@0 | 135 | * XXX There should be SECMIME functions for hashing, or the hashing should |
| michael@0 | 136 | * be built into this interface, which we would like because we would |
| michael@0 | 137 | * support more smartcards that way, and then this argument should go away.) |
| michael@0 | 138 | * |
| michael@0 | 139 | * "digest" is the actual digest of the data. It must be provided in |
| michael@0 | 140 | * the case of detached data or NULL if the content will be included. |
| michael@0 | 141 | * |
| michael@0 | 142 | * This function already does all of the stuff specific to S/MIME protocol |
| michael@0 | 143 | * and local policy; the return value just needs to be passed to |
| michael@0 | 144 | * SEC_PKCS7Encode() or to SEC_PKCS7EncoderStart() to create the encoded data, |
| michael@0 | 145 | * and finally to SEC_PKCS7DestroyContentInfo(). |
| michael@0 | 146 | * |
| michael@0 | 147 | * An error results in a return value of NULL and an error set. |
| michael@0 | 148 | * (Retrieve specific errors via PORT_GetError()/XP_GetError().) |
| michael@0 | 149 | */ |
| michael@0 | 150 | extern SEC_PKCS7ContentInfo *SECMIME_CreateSigned(CERTCertificate *scert, |
| michael@0 | 151 | CERTCertificate *ecert, |
| michael@0 | 152 | CERTCertDBHandle *certdb, |
| michael@0 | 153 | SECOidTag digestalg, |
| michael@0 | 154 | SECItem *digest, |
| michael@0 | 155 | SECKEYGetPasswordKey pwfn, |
| michael@0 | 156 | void *pwfn_arg); |
| michael@0 | 157 | |
| michael@0 | 158 | /************************************************************************/ |
| michael@0 | 159 | SEC_END_PROTOS |
| michael@0 | 160 | |
| michael@0 | 161 | #endif /* _SECMIME_H_ */ |
