Merge tag 'v2.6.38' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

[mv-sheeva.git] / security / keys / trusted.h

diff --git a/security/keys/trusted.h b/security/keys/trusted.h
new file mode 100644 (file)
index 0000000..3249fbd
--- /dev/null
+++ b/security/keys/trusted.h
@@ -0,0 +1,134 @@
+#ifndef __TRUSTED_KEY_H
+#define __TRUSTED_KEY_H
+
+/* implementation specific TPM constants */
+#define MAX_PCRINFO_SIZE               64
+#define MAX_BUF_SIZE                   512
+#define TPM_GETRANDOM_SIZE             14
+#define TPM_OSAP_SIZE                  36
+#define TPM_OIAP_SIZE                  10
+#define TPM_SEAL_SIZE                  87
+#define TPM_UNSEAL_SIZE                        104
+#define TPM_SIZE_OFFSET                        2
+#define TPM_RETURN_OFFSET              6
+#define TPM_DATA_OFFSET                        10
+
+#define LOAD32(buffer, offset) (ntohl(*(uint32_t *)&buffer[offset]))
+#define LOAD32N(buffer, offset)        (*(uint32_t *)&buffer[offset])
+#define LOAD16(buffer, offset) (ntohs(*(uint16_t *)&buffer[offset]))
+
+struct tpm_buf {
+       int len;
+       unsigned char data[MAX_BUF_SIZE];
+};
+
+#define INIT_BUF(tb) (tb->len = 0)
+
+struct osapsess {
+       uint32_t handle;
+       unsigned char secret[SHA1_DIGEST_SIZE];
+       unsigned char enonce[TPM_NONCE_SIZE];
+};
+
+/* discrete values, but have to store in uint16_t for TPM use */
+enum {
+       SEAL_keytype = 1,
+       SRK_keytype = 4
+};
+
+struct trusted_key_options {
+       uint16_t keytype;
+       uint32_t keyhandle;
+       unsigned char keyauth[SHA1_DIGEST_SIZE];
+       unsigned char blobauth[SHA1_DIGEST_SIZE];
+       uint32_t pcrinfo_len;
+       unsigned char pcrinfo[MAX_PCRINFO_SIZE];
+       int pcrlock;
+};
+
+#define TPM_DEBUG 0
+
+#if TPM_DEBUG
+static inline void dump_options(struct trusted_key_options *o)
+{
+       pr_info("trusted_key: sealing key type %d\n", o->keytype);
+       pr_info("trusted_key: sealing key handle %0X\n", o->keyhandle);
+       pr_info("trusted_key: pcrlock %d\n", o->pcrlock);
+       pr_info("trusted_key: pcrinfo %d\n", o->pcrinfo_len);
+       print_hex_dump(KERN_INFO, "pcrinfo ", DUMP_PREFIX_NONE,
+                      16, 1, o->pcrinfo, o->pcrinfo_len, 0);
+}
+
+static inline void dump_payload(struct trusted_key_payload *p)
+{
+       pr_info("trusted_key: key_len %d\n", p->key_len);
+       print_hex_dump(KERN_INFO, "key ", DUMP_PREFIX_NONE,
+                      16, 1, p->key, p->key_len, 0);
+       pr_info("trusted_key: bloblen %d\n", p->blob_len);
+       print_hex_dump(KERN_INFO, "blob ", DUMP_PREFIX_NONE,
+                      16, 1, p->blob, p->blob_len, 0);
+       pr_info("trusted_key: migratable %d\n", p->migratable);
+}
+
+static inline void dump_sess(struct osapsess *s)
+{
+       print_hex_dump(KERN_INFO, "trusted-key: handle ", DUMP_PREFIX_NONE,
+                      16, 1, &s->handle, 4, 0);
+       pr_info("trusted-key: secret:\n");
+       print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE,
+                      16, 1, &s->secret, SHA1_DIGEST_SIZE, 0);
+       pr_info("trusted-key: enonce:\n");
+       print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE,
+                      16, 1, &s->enonce, SHA1_DIGEST_SIZE, 0);
+}
+
+static inline void dump_tpm_buf(unsigned char *buf)
+{
+       int len;
+
+       pr_info("\ntrusted-key: tpm buffer\n");
+       len = LOAD32(buf, TPM_SIZE_OFFSET);
+       print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 16, 1, buf, len, 0);
+}
+#else
+static inline void dump_options(struct trusted_key_options *o)
+{
+}
+
+static inline void dump_payload(struct trusted_key_payload *p)
+{
+}
+
+static inline void dump_sess(struct osapsess *s)
+{
+}
+
+static inline void dump_tpm_buf(unsigned char *buf)
+{
+}
+#endif
+
+static inline void store8(struct tpm_buf *buf, const unsigned char value)
+{
+       buf->data[buf->len++] = value;
+}
+
+static inline void store16(struct tpm_buf *buf, const uint16_t value)
+{
+       *(uint16_t *) & buf->data[buf->len] = htons(value);
+       buf->len += sizeof value;
+}
+
+static inline void store32(struct tpm_buf *buf, const uint32_t value)
+{
+       *(uint32_t *) & buf->data[buf->len] = htonl(value);
+       buf->len += sizeof value;
+}
+
+static inline void storebytes(struct tpm_buf *buf, const unsigned char *in,
+                             const int len)
+{
+       memcpy(buf->data + buf->len, in, len);
+       buf->len += len;
+}
+#endif