| /* SPDX-License-Identifier: GPL-2.0+ */ |
| /* |
| * Copyright IBM Corp. 2019 |
| * Author(s): Harald Freudenberger <freude@linux.ibm.com> |
| * Ingo Franzki <ifranzki@linux.ibm.com> |
| * |
| * Collection of CCA misc functions used by zcrypt and pkey |
| */ |
| |
| #ifndef _ZCRYPT_CCAMISC_H_ |
| #define _ZCRYPT_CCAMISC_H_ |
| |
| #include <asm/zcrypt.h> |
| #include <asm/pkey.h> |
| |
| /* Key token types */ |
| #define TOKTYPE_NON_CCA 0x00 /* Non-CCA key token */ |
| #define TOKTYPE_CCA_INTERNAL 0x01 /* CCA internal key token */ |
| |
| /* For TOKTYPE_NON_CCA: */ |
| #define TOKVER_PROTECTED_KEY 0x01 /* Protected key token */ |
| |
| /* For TOKTYPE_CCA_INTERNAL: */ |
| #define TOKVER_CCA_AES 0x04 /* CCA AES key token */ |
| #define TOKVER_CCA_VLSC 0x05 /* var length sym cipher key token */ |
| |
| /* Max size of a cca variable length cipher key token */ |
| #define MAXCCAVLSCTOKENSIZE 725 |
| |
| /* header part of a CCA key token */ |
| struct keytoken_header { |
| u8 type; /* one of the TOKTYPE values */ |
| u8 res0[1]; |
| u16 len; /* vlsc token: total length in bytes */ |
| u8 version; /* one of the TOKVER values */ |
| u8 res1[3]; |
| } __packed; |
| |
| /* inside view of a CCA secure key token (only type 0x01 version 0x04) */ |
| struct secaeskeytoken { |
| u8 type; /* 0x01 for internal key token */ |
| u8 res0[3]; |
| u8 version; /* should be 0x04 */ |
| u8 res1[1]; |
| u8 flag; /* key flags */ |
| u8 res2[1]; |
| u64 mkvp; /* master key verification pattern */ |
| u8 key[32]; /* key value (encrypted) */ |
| u8 cv[8]; /* control vector */ |
| u16 bitsize; /* key bit size */ |
| u16 keysize; /* key byte size */ |
| u8 tvv[4]; /* token validation value */ |
| } __packed; |
| |
| /* inside view of a variable length symmetric cipher AES key token */ |
| struct cipherkeytoken { |
| u8 type; /* 0x01 for internal key token */ |
| u8 res0[1]; |
| u16 len; /* total key token length in bytes */ |
| u8 version; /* should be 0x05 */ |
| u8 res1[3]; |
| u8 kms; /* key material state, 0x03 means wrapped with MK */ |
| u8 kvpt; /* key verification pattern type, should be 0x01 */ |
| u64 mkvp0; /* master key verification pattern, lo part */ |
| u64 mkvp1; /* master key verification pattern, hi part (unused) */ |
| u8 eskwm; /* encrypted section key wrapping method */ |
| u8 hashalg; /* hash algorithmus used for wrapping key */ |
| u8 plfver; /* pay load format version */ |
| u8 res2[1]; |
| u8 adsver; /* associated data section version */ |
| u8 res3[1]; |
| u16 adslen; /* associated data section length */ |
| u8 kllen; /* optional key label length */ |
| u8 ieaslen; /* optional extended associated data length */ |
| u8 uadlen; /* optional user definable associated data length */ |
| u8 res4[1]; |
| u16 wpllen; /* wrapped payload length in bits: */ |
| /* plfver 0x00 0x01 */ |
| /* AES-128 512 640 */ |
| /* AES-192 576 640 */ |
| /* AES-256 640 640 */ |
| u8 res5[1]; |
| u8 algtype; /* 0x02 for AES cipher */ |
| u16 keytype; /* 0x0001 for 'cipher' */ |
| u8 kufc; /* key usage field count */ |
| u16 kuf1; /* key usage field 1 */ |
| u16 kuf2; /* key usage field 2 */ |
| u8 kmfc; /* key management field count */ |
| u16 kmf1; /* key management field 1 */ |
| u16 kmf2; /* key management field 2 */ |
| u16 kmf3; /* key management field 3 */ |
| u8 vdata[0]; /* variable part data follows */ |
| } __packed; |
| |
| /* Some defines for the CCA AES cipherkeytoken kmf1 field */ |
| #define KMF1_XPRT_SYM 0x8000 |
| #define KMF1_XPRT_UASY 0x4000 |
| #define KMF1_XPRT_AASY 0x2000 |
| #define KMF1_XPRT_RAW 0x1000 |
| #define KMF1_XPRT_CPAC 0x0800 |
| #define KMF1_XPRT_DES 0x0080 |
| #define KMF1_XPRT_AES 0x0040 |
| #define KMF1_XPRT_RSA 0x0008 |
| |
| /* |
| * Simple check if the token is a valid CCA secure AES data key |
| * token. If keybitsize is given, the bitsize of the key is |
| * also checked. Returns 0 on success or errno value on failure. |
| */ |
| int cca_check_secaeskeytoken(debug_info_t *dbg, int dbflvl, |
| const u8 *token, int keybitsize); |
| |
| /* |
| * Simple check if the token is a valid CCA secure AES cipher key |
| * token. If keybitsize is given, the bitsize of the key is |
| * also checked. If checkcpacfexport is enabled, the key is also |
| * checked for the export flag to allow CPACF export. |
| * Returns 0 on success or errno value on failure. |
| */ |
| int cca_check_secaescipherkey(debug_info_t *dbg, int dbflvl, |
| const u8 *token, int keybitsize, |
| int checkcpacfexport); |
| |
| /* |
| * Generate (random) CCA AES DATA secure key. |
| */ |
| int cca_genseckey(u16 cardnr, u16 domain, u32 keybitsize, u8 *seckey); |
| |
| /* |
| * Generate CCA AES DATA secure key with given clear key value. |
| */ |
| int cca_clr2seckey(u16 cardnr, u16 domain, u32 keybitsize, |
| const u8 *clrkey, u8 *seckey); |
| |
| /* |
| * Derive proteced key from an CCA AES DATA secure key. |
| */ |
| int cca_sec2protkey(u16 cardnr, u16 domain, |
| const u8 seckey[SECKEYBLOBSIZE], |
| u8 *protkey, u32 *protkeylen, u32 *protkeytype); |
| |
| /* |
| * Generate (random) CCA AES CIPHER secure key. |
| */ |
| int cca_gencipherkey(u16 cardnr, u16 domain, u32 keybitsize, u32 keygenflags, |
| u8 *keybuf, size_t *keybufsize); |
| |
| /* |
| * Derive proteced key from CCA AES cipher secure key. |
| */ |
| int cca_cipher2protkey(u16 cardnr, u16 domain, const u8 *ckey, |
| u8 *protkey, u32 *protkeylen, u32 *protkeytype); |
| |
| /* |
| * Build CCA AES CIPHER secure key with a given clear key value. |
| */ |
| int cca_clr2cipherkey(u16 cardnr, u16 domain, u32 keybitsize, u32 keygenflags, |
| const u8 *clrkey, u8 *keybuf, size_t *keybufsize); |
| |
| /* |
| * Query cryptographic facility from CCA adapter |
| */ |
| int cca_query_crypto_facility(u16 cardnr, u16 domain, |
| const char *keyword, |
| u8 *rarray, size_t *rarraylen, |
| u8 *varray, size_t *varraylen); |
| |
| /* |
| * Search for a matching crypto card based on the Master Key |
| * Verification Pattern provided inside a secure key. |
| * Works with CCA AES data and cipher keys. |
| * Returns < 0 on failure, 0 if CURRENT MKVP matches and |
| * 1 if OLD MKVP matches. |
| */ |
| int cca_findcard(const u8 *key, u16 *pcardnr, u16 *pdomain, int verify); |
| |
| /* |
| * Build a list of cca apqns meeting the following constrains: |
| * - apqn is online and is in fact a CCA apqn |
| * - if cardnr is not FFFF only apqns with this cardnr |
| * - if domain is not FFFF only apqns with this domainnr |
| * - if minhwtype > 0 only apqns with hwtype >= minhwtype |
| * - if cur_mkvp != 0 only apqns where cur_mkvp == mkvp |
| * - if old_mkvp != 0 only apqns where old_mkvp == mkvp |
| * - if verify is enabled and a cur_mkvp and/or old_mkvp |
| * value is given, then refetch the cca_info and make sure the current |
| * cur_mkvp or old_mkvp values of the apqn are used. |
| * The array of apqn entries is allocated with kmalloc and returned in *apqns; |
| * the number of apqns stored into the list is returned in *nr_apqns. One apqn |
| * entry is simple a 32 bit value with 16 bit cardnr and 16 bit domain nr and |
| * may be casted to struct pkey_apqn. The return value is either 0 for success |
| * or a negative errno value. If no apqn meeting the criterias is found, |
| * -ENODEV is returned. |
| */ |
| int cca_findcard2(u32 **apqns, u32 *nr_apqns, u16 cardnr, u16 domain, |
| int minhwtype, u64 cur_mkvp, u64 old_mkvp, int verify); |
| |
| /* struct to hold info for each CCA queue */ |
| struct cca_info { |
| int hwtype; /* one of the defined AP_DEVICE_TYPE_* */ |
| char new_mk_state; /* '1' empty, '2' partially full, '3' full */ |
| char cur_mk_state; /* '1' invalid, '2' valid */ |
| char old_mk_state; /* '1' invalid, '2' valid */ |
| u64 new_mkvp; /* truncated sha256 hash of new master key */ |
| u64 cur_mkvp; /* truncated sha256 hash of current master key */ |
| u64 old_mkvp; /* truncated sha256 hash of old master key */ |
| char serial[9]; /* serial number string (8 ascii numbers + 0x00) */ |
| }; |
| |
| /* |
| * Fetch cca information about an CCA queue. |
| */ |
| int cca_get_info(u16 card, u16 dom, struct cca_info *ci, int verify); |
| |
| void zcrypt_ccamisc_exit(void); |
| |
| #endif /* _ZCRYPT_CCAMISC_H_ */ |
