Fix a few typos
diff --git a/include/mbedtls/chacha20.h b/include/mbedtls/chacha20.h
index d7a0750..47bd7d3 100644
--- a/include/mbedtls/chacha20.h
+++ b/include/mbedtls/chacha20.h
@@ -139,7 +139,7 @@
* \c mbedtls_chacha20_starts() must be called at least once
* to setup the context before this function can be called.
*
- * \note This function can be called mutliple times in a row in
+ * \note This function can be called multiple times in a row in
* order to encrypt of decrypt data piecewise with the same
* key and nonce.
*
diff --git a/include/mbedtls/chachapoly.h b/include/mbedtls/chachapoly.h
index 649749a..42b2b23 100644
--- a/include/mbedtls/chachapoly.h
+++ b/include/mbedtls/chachapoly.h
@@ -175,7 +175,7 @@
* The Additional Authenticated Data (AAD), also called
* Associated Data (AD) is only authenticated but not
* encrypted nor included in the encrypted output. It is
- * usually transmitted separately fro mthe ciphertext or
+ * usually transmitted separately from the ciphertext or
* computed locally by each party.
*
* \note This function is called before data is encrypted/decrypted.
diff --git a/include/mbedtls/poly1305.h b/include/mbedtls/poly1305.h
index 5c69a81..54b50ab 100644
--- a/include/mbedtls/poly1305.h
+++ b/include/mbedtls/poly1305.h
@@ -1,7 +1,7 @@
/**
* \file poly1305.h
*
- * \brief This file containts Poly1305 definitions and functions.
+ * \brief This file contains Poly1305 definitions and functions.
*
* Poly1305 is a one-time message authenticator that can be used to
* authenticate messages. Poly1305-AES was created by Daniel
@@ -109,9 +109,9 @@
* \brief This functions feeds an input buffer into an ongoing
* Poly1305 computation.
*
- * It is called between \c mbedtls_cipher_cmac_starts() and
- * \c mbedtls_cipher_cmac_finish().
- * Can be called repeatedly to process a stream of data.
+ * It is called between \c mbedtls_cipher_poly1305_starts() and
+ * \c mbedtls_cipher_poly1305_finish().
+ * It can be called repeatedly to process a stream of data.
*
* \param ctx The Poly1305 context to use for the Poly1305 operation.
* \param ilen The length of the input data (in bytes). Any value is accepted.