c186c66a29
1. We will progressively migrate to this implementation. 2. For richc to have a quick review on the keymgmt part. 3. Add remove_key and make sure all functions are working. 4. Add permission check for get operation. 5. Return the retry count if unlock failed. 6. Add the reset operation for keystore reset. 7. Add the putfile shell command for putting the key value from file. 8. Fix the boundary issue during parsing command. 9. Use the ' ' as delimiter and reset the reply structure for each request. 10. Add change password retry count check. 11. Extract the read_marshal/write_marshal for certtool.h. 12. Remove the old implementation.
82 lines
2.7 KiB
C
82 lines
2.7 KiB
C
/*
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** Copyright 2009, The Android Open Source Project
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**
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** Licensed under the Apache License, Version 2.0 (the "License");
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** you may not use this file except in compliance with the License.
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** You may obtain a copy of the License at
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**
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** http://www.apache.org/licenses/LICENSE-2.0
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**
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** Unless required by applicable law or agreed to in writing, software
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** distributed under the License is distributed on an "AS IS" BASIS,
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** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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** See the License for the specific language governing permissions and
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** limitations under the License.
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*/
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#ifndef __KEYMGMT_H__
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#define __KEYMGMT_H__
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#define MASTER_KEY_TAG "master_key"
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#define MASTER_KEY ".keymaster"
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#define MAX_PATH_LEN 128
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#define SALT "Android Keystore 0.1"
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#define NAME_DELIMITER "_"
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#define KEYFILE_NAME "%s"NAME_DELIMITER"%s"
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#define KEYGEN_ITER 1024
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#define AES_KEY_LEN 128
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#define USER_KEY_LEN (AES_KEY_LEN/8)
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#define IV_LEN USER_KEY_LEN
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#define MAX_RETRY_COUNT 6
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#define gen_key(passwd, key, len) \
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PKCS5_PBKDF2_HMAC_SHA1(passwd, strlen(passwd), \
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(unsigned char*)SALT, \
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strlen(SALT), KEYGEN_ITER, \
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len, key)
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#define KEYFILE_LEN MAX_NAMESPACE_LENGTH + MAX_KEY_NAME_LENGTH + 6
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#define get_blob_size(blob) \
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(((blob->value_size + sizeof(uint32_t) + MAX_KEY_NAME_LENGTH \
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+ USER_KEY_LEN - 1) / USER_KEY_LEN) * USER_KEY_LEN)
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#define MAX_BLOB_LEN ((MAX_KEY_VALUE_LENGTH + MAX_KEY_NAME_LENGTH + \
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sizeof(uint32_t) + USER_KEY_LEN - 1) / USER_KEY_LEN)\
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* USER_KEY_LEN
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#define data_blob_size(blob) USER_KEY_LEN + sizeof(uint32_t) + blob->blob_size
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typedef struct {
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unsigned char iv[USER_KEY_LEN];
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uint32_t blob_size;
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union {
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unsigned char blob[1];
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struct {
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uint32_t value_size;
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char keyname[MAX_KEY_NAME_LENGTH];
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unsigned char value[MAX_KEY_VALUE_LENGTH];
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} __attribute__((packed));
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};
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} DATA_BLOB;
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typedef struct {
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char tag[USER_KEY_LEN];
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unsigned char master_key[USER_KEY_LEN];
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} MASTER_BLOB;
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int put_key(const char *namespace, const char *keyname,
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unsigned char *data, int size);
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int get_key(const char *namespace, const char *keyname,
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unsigned char *data, int *size);
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int remove_key(const char *namespace, const char *keyname);
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int list_keys(const char *namespace, char reply[BUFFER_MAX]);
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int passwd(char *data);
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int lock();
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int unlock(char *passwd);
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KEYSTORE_STATE get_state();
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int reset_keystore();
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int init_keystore(const char *dir);
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#endif
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