Codespell source code fixes

diff --git a/src/common/merkle.h b/src/common/merkle.h
index 27997a8..c1762e4 100644
--- a/src/common/merkle.h
+++ b/src/common/merkle.h
@@ -75,10 +75,10 @@ int merkle_get_ith_direction(size_t size, size_t index, size_t i);
 /**
  * Represents the Merkleized version of a key-value map, holding the number of elements, the root of
  * the Merkle tree of the sorted list of keys, and the root of the Merkle tree of the values (sorted
- * by their correpsonding key).
+ * by their corresponding key).
  */
 typedef struct {
     uint64_t size;
     uint8_t keys_root[32];
     uint8_t values_root[32];
-} merkleized_map_commitment_t;
\ No newline at end of file
+} merkleized_map_commitment_t;
diff --git a/src/common/wallet.h b/src/common/wallet.h
index 1714805..edc8090 100644
--- a/src/common/wallet.h
+++ b/src/common/wallet.h
@@ -308,9 +308,9 @@ typedef enum {
 // The compiler doesn't like /** inside a block comment, so we disable this warning temporarily.
 
 /** Structure representing a key expression.
- * In V1, it's the index of a key in the key informations array, which includes the final /** step.
- * In V2, it's the index of a key in the key informations array, plus the two numbers a, b in the
- * /<NUM_a;NUM_b>/* derivation steps; here, the xpubs in the key informations array don't have extra
+ * In V1, it's the index of a key in the key information array, which includes the final /** step.
+ * In V2, it's the index of a key in the key information array, plus the two numbers a, b in the
+ * /<NUM_a;NUM_b>/* derivation steps; here, the xpubs in the key information array don't have extra
  * derivation steps.
  */
 #pragma GCC diagnostic pop
diff --git a/src/crypto.h b/src/crypto.h
index 4c41df0..1a694f9 100644
--- a/src/crypto.h
+++ b/src/crypto.h
@@ -329,7 +329,7 @@ bool crypto_derive_symmetric_key(const char *label, size_t label_len, uint8_t ke
 int base58_encode_address(const uint8_t in[20], uint32_t version, char *out, size_t out_len);
 
 /**
- * Signs a SHA-256 hash using the ECDSA with deterministic nonce accordin to RFC6979; the signing
+ * Signs a SHA-256 hash using the ECDSA with deterministic nonce according to RFC6979; the signing
  * private key is the one derived at the given BIP-32 path. The signature is returned in the
  * conventional DER encoding.
  *
diff --git a/src/handler/lib/policy.c b/src/handler/lib/policy.c
index efae9ec..b8e9acc 100644
--- a/src/handler/lib/policy.c
+++ b/src/handler/lib/policy.c
@@ -417,7 +417,7 @@ execute_processor(policy_parser_state_t *state, policy_parser_processor_t proc,
 
 // p2pkh                     ==> legacy address (start with 1 on mainnet, m or n on testnet)
 // p2sh (also nested segwit) ==> legacy script  (start with 3 on mainnet, 2 on testnet)
-// p2wpkh or p2wsh           ==> bech32         (sart with bc1 on mainnet, tb1 on testnet)
+// p2wpkh or p2wsh           ==> bech32         (start with bc1 on mainnet, tb1 on testnet)
 
 // convenience function, split from get_derived_pubkey only to improve stack usage
 // returns -1 on error, 0 if the returned key info has no wildcard (**), 1 if it has the wildcard
@@ -1163,7 +1163,7 @@ int get_wallet_script(dispatcher_context_t *dispatcher_context,
         out[1] = 32;  // PUSH 32 bytes
 
         // uint8_t h[32];
-        uint8_t *h = out + 2;  // hack: re-use the output array to save memory
+        uint8_t *h = out + 2;  // hack: reuse the output array to save memory
 
         int h_length = 0;
         if (!isnull_policy_node_tree(&tr_policy->tree)) {
diff --git a/src/handler/lib/policy.h b/src/handler/lib/policy.h
index 9e01cda..9c974a6 100644
--- a/src/handler/lib/policy.h
+++ b/src/handler/lib/policy.h
@@ -21,7 +21,7 @@
  * @param policy_map_bytes Pointer to an array of bytes that will be used for the parsed abstract
  * syntax tree
  * @param policy_map_bytes_len Length of policy_map_bytes in bytes.
- * @return The memory size of the parsed descriotor template on success, a negative number in case
+ * @return The memory size of the parsed descriptor template on success, a negative number in case
  * of error.
  */
 // TODO: we should distinguish actual errors from just "policy too big to fit in memory"
@@ -46,7 +46,7 @@ typedef struct {
     int wallet_version;  // The wallet policy version, either WALLET_POLICY_VERSION_V1 or
                          // WALLET_POLICY_VERSION_V2
     const uint8_t
-        *keys_merkle_root;  // The Merkle root of the tree of key informations in the policy
+        *keys_merkle_root;  // The Merkle root of the tree of key information in the policy
     uint32_t n_keys;        // The number of key information elements in the policy
     size_t address_index;   // The address index to use in the derivation
     bool change;            // whether a change address or a receive address is derived
@@ -249,4 +249,4 @@ __attribute__((warn_unused_result)) int is_policy_sane(dispatcher_context_t *dis
                                                        const policy_node_t *policy,
                                                        int wallet_version,
                                                        const uint8_t keys_merkle_root[static 32],
-                                                       uint32_t n_keys);
\ No newline at end of file
+                                                       uint32_t n_keys);
diff --git a/src/handler/lib/psbt_parse_rawtx.h b/src/handler/lib/psbt_parse_rawtx.h
index dbd67e6..0f60fc2 100644
--- a/src/handler/lib/psbt_parse_rawtx.h
+++ b/src/handler/lib/psbt_parse_rawtx.h
@@ -14,7 +14,7 @@ typedef struct {
 
 /**
  * Given a commitment to a merkleized map and a key, this flow parses it as a serialized bitcoin
- * transaction, computes the transaction id and optionally keeps track of the vout amunt and
+ * transaction, computes the transaction id and optionally keeps track of the vout amount and
  * scriptPubkey of one of the outputs.
  */
 int call_psbt_parse_rawtx(dispatcher_context_t *dispatcher_context,
diff --git a/src/handler/lib/stream_merkle_leaf_element.h b/src/handler/lib/stream_merkle_leaf_element.h
index 8704499..0331606 100644
--- a/src/handler/lib/stream_merkle_leaf_element.h
+++ b/src/handler/lib/stream_merkle_leaf_element.h
@@ -9,7 +9,7 @@
  * by its index. If len_callback is not NONE, it is called before the other callback with the length
  * of the preimage (not including the 0x00 prefix).
  *
- * Returns a nagative number on failure, or the preimage length on success.
+ * Returns a negative number on failure, or the preimage length on success.
  */
 int call_stream_merkle_leaf_element(dispatcher_context_t *dispatcher_context,
                                     const uint8_t merkle_root[static 32],
@@ -17,4 +17,4 @@ int call_stream_merkle_leaf_element(dispatcher_context_t *dispatcher_context,
                                     uint32_t leaf_index,
                                     void (*len_callback)(size_t, void *),
                                     void (*callback)(buffer_t *, void *),
-                                    void *callback_state);
\ No newline at end of file
+                                    void *callback_state);
diff --git a/src/handler/sign_psbt.c b/src/handler/sign_psbt.c
index 1bc017c..9c8812d 100644
--- a/src/handler/sign_psbt.c
+++ b/src/handler/sign_psbt.c
@@ -1092,7 +1092,7 @@ execute_swap_checks(dispatcher_context_t *dc, sign_psbt_state_t *st) {
             data_size = second_byte;
         } else if (second_byte == OP_PUSHDATA1) {
             // pushing more than 75 bytes requires using OP_PUSHDATA1 <len>
-            // insted of a single-byte opcode
+            // instead of a single-byte opcode
             push_opcode_size = 2;
             data_size = opreturn_script[2];
         } else {
@@ -2106,7 +2106,7 @@ void handler_sign_psbt(dispatcher_context_t *dc, uint8_t protocol_version) {
 
     st.protocol_version = protocol_version;
 
-    // read APDU inputs, intialize global state and read global PSBT map
+    // read APDU inputs, initialize global state and read global PSBT map
     if (!init_global_state(dc, &st)) return;
 
     sign_psbt_cache_t *cache = &G_sign_psbt_cache;
diff --git a/src/ui/display_utils.h b/src/ui/display_utils.h
index 087b445..01aac52 100644
--- a/src/ui/display_utils.h
+++ b/src/ui/display_utils.h
@@ -9,7 +9,7 @@
 #define MAX_AMOUNT_LENGTH (5 + 1 + 20 + 1)
 
 /**
- * Converts a 64-bits unsigned integer into a decimal rapresentation, where the `amount` is a
+ * Converts a 64-bits unsigned integer into a decimal representation, where the `amount` is a
  * multiple of 1/100_000_000th. Trailing decimal zeros are not appended (and no decimal point is
  * present if the `amount` is a multiple of 100_000_000). The resulting string is prefixed with a
  * ticker name (up to 5 characters long), followed by a space.