Fixed common misspellings.

Mostly found by 'codespell'.

src/libstrongswan/plugins/blowfish/COPYRIGHT

@@ -37,7 +37,7 @@ SUCH DAMAGE.
 
 The license and distribution terms for any publically available version or
 derivative of this code cannot be changed.  i.e. this code cannot simply be
-copied and put under another distrubution license
+copied and put under another distribution license
 [including the GNU Public License.]
 
 The reason behind this being stated in this direct manner is past

src/libstrongswan/plugins/ccm/ccm_aead.c

@@ -67,7 +67,7 @@ typedef struct __attribute__((packed)) {
 		u_char salt[SALT_SIZE];
 		u_char iv[IV_SIZE];
 	} nonce;
-	/* lenght of plain text, q */
+	/* length of plain text, q */
 	u_char q[Q_SIZE];
 } b0_t;
 

src/libstrongswan/plugins/des/des_crypter.c

@@ -80,7 +80,7 @@ struct private_des_crypter_t {
 	des_crypter_t public;
 
 	/**
-	 * Key size, depends on algoritm...
+	 * Key size, depends on algorithm...
 	 */
 	size_t key_size;
 
@@ -127,7 +127,7 @@ YOU SHOULD NOT HAVE BOTH DES_RISC1 AND DES_RISC2 DEFINED!!!!!
 #endif
 
 /* Unroll the inner loop, this sometimes helps, sometimes hinders.
- * Very mucy CPU dependant */
+ * Very much CPU dependent */
 #ifndef DES_UNROLL
 #define DES_UNROLL
 #endif
@@ -316,7 +316,7 @@ YOU SHOULD NOT HAVE BOTH DES_RISC1 AND DES_RISC2 DEFINED!!!!!
  * bytes, probably an issue of accessing non-word aligned objects :-( */
 #ifdef DES_PTR
 
-/* It recently occured to me that 0^0^0^0^0^0^0 == 0, so there
+/* It recently occurred to me that 0^0^0^0^0^0^0 == 0, so there
  * is no reason to not xor all the sub items together.  This potentially
  * saves a register since things can be xored directly into L */
 

src/libstrongswan/plugins/gcrypt/gcrypt_rsa_private_key.c

@@ -68,7 +68,7 @@ chunk_t gcrypt_rsa_find_token(gcry_sexp_t sexp, char *name, gcry_sexp_t key)
 			if (key)
 			{
 				/* gcrypt might return more bytes than necessary. Truncate
-				 * to key lenght if key given, or prepend zeros if needed  */
+				 * to key length if key given, or prepend zeros if needed  */
 				len = gcry_pk_get_nbits(key);
 				len = len / 8 + (len % 8 ? 1 : 0);
 				if (len > data.len)

src/libstrongswan/plugins/hmac/hmac.h

@@ -30,7 +30,7 @@ typedef struct hmac_t hmac_t;
  * Message authentication using hash functions.
  *
  * This class implements the message authenticaion algorithm
- * described in RFC2104. It uses a hash function, wich must
+ * described in RFC2104. It uses a hash function, which must
  * be implemented as a hasher_t class.
  */
 struct hmac_t {

src/libstrongswan/plugins/pkcs11/pkcs11_library.c

@@ -495,7 +495,7 @@ typedef struct {
 	CK_SESSION_HANDLE session;
 	/* pkcs11 library */
 	pkcs11_library_t *lib;
-	/* attributes to retreive */
+	/* attributes to retrieve */
 	CK_ATTRIBUTE_PTR attr;
 	/* number of attributes */
 	CK_ULONG count;

src/libstrongswan/plugins/pkcs11/pkcs11_manager.h

@@ -32,7 +32,7 @@ typedef struct pkcs11_manager_t pkcs11_manager_t;
  *
  * @param data		user supplied data, as passed to pkcs11_manager_create()
  * @param p11		loaded PKCS#11 library token belongs to
- * @param slot		slot number the event occured in
+ * @param slot		slot number the event occurred in
  * @param add		TRUE if token was added to the slot, FALSE if removed
  */
 typedef void (*pkcs11_manager_token_event_t)(void *data, pkcs11_library_t *p11,

src/libstrongswan/plugins/plugin.h

@@ -52,7 +52,7 @@ struct plugin_t {
 
 
 /**
- * Plugin constructor function definiton.
+ * Plugin constructor function definition.
  *
  * Each plugin has a constructor function. This function is called on daemon
  * startup to initialize each plugin.